[phkahler]

Reminds me of this tragic but true story about a man and his dog that died in a Corvette because the door failed to open electronically.

https://www.usatoday.com/story/news/nation-now/2015/06/11/te...

If your car door uses electricity to open, you best know what to do when that system fails. Death should not occur due to failure to RTFM for a door.

[chris1993]

My wife's cousin almost died from heat-stroke in her drive-way when her car trapped her inside the vehicle in full Australian summer sun because the battery failed while she was inside checking something. Doors and windows wouldn't open. Nobody heard her calls because the new car had good sound-proofing. She eventually managed to crawl through the panel behind the back seat to get into the boot (luckily she's quite petite) and get a tyre lever and smash a side-window so she could call out to a neighbour for help.

[brokenmachine]

It's too late now for her of course, but you can take the headrest off the seat and use the metal prongs to smash the windows to get out.

[mauvehaus]

Having watched a burly firefighter take three good swings with an axe to bust out a window (to get to the hood release of an unattended car fire), I am extremely skeptical of this claim.

Somebody on YouTube tested those emergency hammers and concluded they're basically useless. If you really want to break a tempered glass car window (I.e., any of them but the windshield), their recommendation was an automatic center punch.

[aaaaaaaaaaab]

You’re supposed to do it like this: https://youtu.be/tZTa8Nh0VlE

[senortumnus]

This reminds me of the spark plug ceramic demos. Little ceramic tip on a spark plug (isolated from the rest of the plug) make an effective car window smashing projectile. No idea if it would work from inside the car / if you could get enough speed on it sitting right next to the window!

https://www.reddit.com/r/mythbusters/comments/130js6/breakin...

[ayemiller]

Technically it's not the tip of a spark plug, but a shard of the ceramic insulator when shattered- https://en.wikipedia.org/wiki/Ninja_rocks

[jes]

Right. As a firefighter, I carried a spring-loaded center-punch in the pocket of my bunker coat. No muss, no fuss. Just put the tip on a side window and press until it fires.

[kingcharles]

Watch this... this made me realize how tough car windows really are:

https://www.youtube.com/watch?v=L91_K-s4pMM

[mlindner]

He's hitting the base of the window with a blunt object. You don't want a blunt object.

[djmips]

Windshield even more so.

[kQq9oHeAz6wLLS]

I believe your windshield is an integral part of your car's rollover protection

[fdjsafdsjl]

Depends if you are trying to break the window from the inside or the outside. It's very difficult from the outside, and much easier from the inside (I cracked my windscreen and needed a replacement, because I was carrying a long piece of wood and it moved a little and contacted the windscreen).

[mauvehaus]

Two things:

1) Are you me? I've done exactly this because I knew that my car fit a 10' board. Turns out when you're buying rough lumber 10' sometimes means 10' 2".

2) The windshield is laminated glass instead of tempered. It'll crack much more easily, but it'll (more or less) stay in one piece in the frame instead of shattering out into a million tiny bits.

[mlindner]

> Having watched a burly firefighter take three good swings with an axe to bust out a window (to get to the hood release of an unattended car fire), I am extremely skeptical of this claim.

Wrong window. You're talking about the windshield which is a completely different type of glass than other windows.

[mauvehaus]

He was trying to break the side window. Tempered glass is super tough, until you damage the outer layer. Presumably the pick end of his fire axe wasn't sharp or hard enough to scratch that outer layer without a hell of a swing behind it.

[boppo1]

I have heard keeping a shattered sparkplug inyour car can help. Something about them auto-shatters glass.

[Aloha]

I've carried a hatchet in my car for years for this reason.

[nyolfen]

breaking the windshield is the cheapest option to replace

[notJim]

Also in the "too late" vein, at least in the US, I believe cars are still required to have a latch to open the trunk from the inside. Not sure if other countries have these.

[yumraj]

Serious question: So why are all the people who are trapped/kidnapped in the cars in the movies not able to come out and have to yell to have someone come and rescue them?

That implies that there is no way to open the latch from inside and people, including me, may take that as the truth and not even try to find the latch. I for sure didn't know that there was a way.

[notJim]

For some reason, the law requires the latch to be removed if the car is in a movie ;)

[dylan604]

The only person in the movies I'm aware of that went to jail for breaking the laws for removing tags was Pee-wee Herman.

However, I'm truly shocked that someone asked "how come in a movie...".

[zerocount]

It's too dark to search for it, so you'd have to already know where the latch is at. I didn't know about keyless trunks until my ex-wife needed a jump and the battery was in the trunk, which could only be opened electronically or with the 'latch.' Google to the rescue!

[dghlsakjg]

All of the inner latches I’ve seen are made of glow in the dark material.

[jstarfish]

Most of the vehicles I've seen used for this purpose in movies are Oldsmobiles and such from the 70s-- long before the latches were a requirement. Modern car trunks are also way smaller than older sedans, which don't lend themselves to human transport.

If you're ever in the trunk of a moving vehicle, do what you can to sabotage the brake lights-- the wires are usually accessible and it increases the chances of attracting police attention.

[vbezhenar]

I don't know about US, but in my country many cars (most?) are equipped with child safety switches for back doors. It's accessible when door is open (it's on door's inner edge) and if it's locked, you can't open door inside. It's needed to prevent children from accidentally opening doors, but you can use this feature for kidnapping purposes.

Of course you can always open front doors.

[pomian]

because their hands are tied.

[yumraj]

Not in all cases..

[elzbardico]

As far as I know this is widely disseminated across the world.

[holoduke]

Front windshield is easy to brake from the inside. A gentle push with your feet will crack it. Some harder kicks will remove it for sure.

[zerocount]

Yep, not much more than moulding holding it in.

[cabalamat]

Have you actually tried this?

[forgotmyoldname]

Some cars (including mine) have a seat that’s just one unified unit. No way to remove it.

[elzbardico]

if you can get inside the boot you can open it, no need to break the windows. It is a shame this is not more widely know.

[hansthehorse]

That happens here in Florida. Older person drives into a canal and the window motors short out they are trapped.

[sizzle]

Don’t all cars have the trunk pull release by law?

[selimthegrim]

The horn depending on the battery is frightening

[quesera]

I'm having trouble envisioning an alternative power source for the horn.

Compressed air maybe, recharged by electric motor when available. Sounds like a reliability problem to me though.

[zerocount]

Why? I've only used my horn for telling people to get off their phone and go because the light turned green. I can't remember it ever being a necessity.

[silisili]

Wait what, do Corvettes not just unlock and open when you pull the handle? Every vehicle I've ever owned, from the 80s to now, manual or electric lock, the front doors both open when the handle is pulled, locked or not. If this isn't the case, I'm almost inclined to consider that criminally negligent.

[LeifCarrotson]

> the front doors both open when the handle is pulled, locked or not

The fact that the front doors both unlock when a single handle is pulled is because there's an electronic sensor and solenoid that unlocks everything when one handle is opened.

I had a Pontiac Vibe (really a Toyota Matrix) that had a cable in the door unlock assembly fail. You could open the door from the outside - the external door handle was physically the same part as the latch mechanism - but the external handle was back by your shoulder, while the internal handle was forward by the mirror and connected to the latch by a steel cable swaged to some aluminum pins; that connection eventually failed and the internal door handle flapped impotently.

I spent an embarrassing amount of time ignoring the problem and instead rolling down the window to open the door...

Regardless, it's not that much of a stretch to imagine that an automotive engineer might decide to replace cable actuator with a wire and solenoid.

[bigiain]

> Regardless, it's not that much of a stretch to imagine that an automotive engineer might decide to replace cable actuator with a wire and solenoid.

Or with a bunch of CANBUS electromechanical hardware and some shittily written software running on the entertainment unit (with insecure cellular network connectivity).

I wonder how long before someone sets up unlockyourtoyota.ru where you can send them 0.01BTC to unlock the car you're stuck inside?

[betwixthewires]

This made my day. You're 100% spot on. I laughed loudly at the absurd truth you painted for me.

Low effort comment I know, but I had to let you know.

[unobatbayar]

> unlockyourtoyota.ru

The fact that it's a russian site made my day. Russian hackers man...

[drewzero1]

I think what GP might mean is that whether you are on the driver's or passenger's side, when you pull the handle that door opens even if it is locked.

I've noticed that on both our 1995 and 2014 Fords, when you pull the door handle it mechanically unlocks that door and opens it. (On the 2014 the other doors may additionally be triggered to unlock. However, in a no-power situation pulling the handle will still mechanically unlock just that one door.)

[frosted-flakes]

Chevy Express vans and trucks didn't unlock the door when you pulled the handle. You had to manually slide the unlock toggle or hit the electronic unlock button before opening the door.

[drewzero1]

I've only noticed this feature on Fords. My SAAB requires the occupant to pull up on the lock knob on the windowsill, and my Saturn requires one to turn the lock knob on the inside door handle to the unlocked position. While both require additional action besides just pulling the handle, neither relies on the car's electrical system to open or unlock the doors (and indeed, neither car has any electrical locking component in any of the doors).

[frosted-flakes]

To be clear, the vehicles I was referring to all had manual lock controls. The button unlocked all of the doors

[sbierwagen]

That's a fairly common failure for many older cars. I had a 1997 Jaguar do the same thing.

[phkahler]

You could also climb over and exit the other door.

[seanp2k2]

They have a button that you hit with your thumb, not a mechanical handle. The manual door open lever is down by the driver's left foot (passenger's right foot) https://www.edmunds.com/chevrolet/corvette-stingray/2014/lon...

[alistairSH]

Sure enough, Corvettes since the mid-00s (at least) have electronic doors.

Here's a video describing how to use the manual overrides (none are in plain sight)... https://www.youtube.com/watch?v=DLDqmGQU6L0

Here's a photo of thee door interior (with no mechanical door pull)... https://i.ebayimg.com/images/g/7I8AAOSwF-tgN5U1/s-l300.jpg

[bigiain]

A long time ago, a friend bought a kit for one of these:

https://en.wikipedia.org/wiki/Purvis_Eureka

I spent a lot of time helping build it.

He got the "electric roof" version, which had this awful hodgepodge for pneumatic rams, high pressure air hoses and couplings, and a seriously underpowered hydraulic pump - with instructions to fill the system with auto transmission fluid.

It was _not_ a well designed and reliable system, and some of the failure modes left the roof/door clamped down. He kept a pocket knife in th4e glovebox so you could stab the hoses to release the hydraulic fluid and manually push the roof open.

It wasn't until it failed closed while he was taking his girlfriend to the high school formal/dance, then ruined her dress by getting red auto trans fluid on it that he bit the bullet and threw all the supplied parts away and replaced it all with electric liner actuators...

[sbierwagen]

For those who haven't clicked the link: The roof/doors are all one big assembly that hinges up and away, like Lambo doors for the entire top of the car.

[bumby]

My Nissan Versa has manual locks that do not unlock when the door handle is pulled from the inside, to include front doors (not a child safety lever issue). Granted, they’re manual so it’s easy to just unlock but from a human factors perspective I can see people panicking and just yanking on the door handle in a critical emergency like a fire.

I’ve always considered this a serious safety design flaw.

[mauvehaus]

That's how pretty much all car doors worked for decades. As a kid I used to lock the back doors when riding around and pull the handle [0]. No, the child safety locks were not enabled.

[0] Why? Why do kids do anything, really?

[bumby]

I’m not sure this is a given. My previous Ford would unlock the front door when the indoor handle was pulled, regardless of lock state. It seems like it’s depends on manufacturer, model, and options package.

https://mechanics.stackexchange.com/questions/52480/is-the-d...

[mdp2021]

> the front doors both open when the handle is pulled, locked or not

Unfortunately, this is not anymore warranted. Already in models of ten years ago, there do exist "full lock non mechanically overridable" and "lock which is unlocked through the handles". Disabling the "feature" requires intervention from the manufacturer - if it can be disabled at all.

Look, I am informed that in at least many of the current cars with RFID based keys, it is impossible to lock yourself in the car... (And the idea seems to have spawned from manufacturers coming from the territories in the world most notorious for carjacking.)

[skykooler]

That hasn't always been the case. For example, our 1991 Saturn station wagon (with mechanical locks) would only open if you unlocked the door first with the lock lever.

[judge2020]

> Police believe that when James Rogers got into the vehicle, a cable became loose and cut off the power to the operate the horn and locks. Rogers did not know how to manually unlock the vehicle and became trapped inside

> the 2007 Corvette has a manual release located on the floorboard by the driver's seat

Having random cables cut doesn't help the situation, but the issue was not knowing how to manually release the latch and not having an emergency window breaker.

[wikibob]

This is absurd victim blaming.

The problem is there is a door handle that is designed with a failure mode such that pulling the handle DOES NOT OPEN THE DOOR.

[seanp2k2]

I agree; it's like all the rollaway accidents that happen now because of electronic shifters: https://www.safetyresearch.net/the-persistence-of-rollaway/

Design matters, and bad designs can literally be deadly. Why auto mfgs feel the need to "innovate" with shifter designs is beyond me. The worst part is how every mfg seems to be implementing a different design of bad electronic shifters, from wheels and touchscreens to one-click-at-a-time joysticks to single-function pushbuttons for some gears with others on a scroll wheel. They've taken something and made it worse with no benefit to the user. At least with those auto-flushing toilets, the intention was good, even if the implementation is still somehow so awful decades later.

[aidenn0]

I drove a rental with a rotary-dial shifter. That is the single most braindead UX thing I've seen in a car that doesn't involve a touch-screen. We've had PRND(L) levers as the standard for shifting in automatics for over 50 years now, and the dial offers no advantages that I can see.

[elzbardico]

Probably it is a few dolars cheaper. Not enough to change the bottom line, but as always, any short term cost cutting is enough to give brain-dead Harvard MBAs multiple orgasms.

[derekp7]

My Ford Fusion has one of those rotary dials. Didn't like it at first, but it is nice having that air space free (not able to accidentally knock it out of gear, more room for an extra cup holder). Also the cars with a physical gear shift lever still work by activating switches, there hasn't been mechanical linkage for years in a lot of models.

[phkahler]

>> We've had PRND(L) levers as the standard for shifting in automatics for over 50 years now, and the dial offers no advantages that I can see.

My guess is that the dial costs less, so it is done for the company not the customer. Many cases of bad design come from prioritizing the manufacturer over the customer.

[selimthegrim]

Pray tell what make and model this was so I can run as fast as my legs can take me in the opposite direction if Hertz tries to palm one off on me

[betwixthewires]

It's not just auto manufacturers. It seems literally everything is being designed with a philosophy of "fuck the user" in mind. I cannot think of a single thing more complicated than a concrete block that functions better now than previous versions did 10 years ago, and I'm sure there are some things that work at least as good, but I can't think of any off the top of my head.

[phkahler]

>> I cannot think of a single thing more complicated than a concrete block that functions better now than previous versions did 10 years ago...

I've got news for you. My uncle worked in construction most his life. He told me the concrete isn't as good today as it used to be. He said in some places for shipping they "blow it around". Meaning you don't put it on a ship using a conveyor, you do something similar to blowing dust through a pipe? I never asked for more detail. He thought the handling was exposing it to humidity or in some way degrading the concrete. This would be another case of prioritizing cost/efficiency over the customer.

So even your humble concrete block might not be as good as they used to make em'

[SAI_Peregrinus]

Quite a lot of electronics test & measurement equipment. Notably modern spectrum analyzers & network analyzers. Also modern arbitrary waveform generators & RF generators are vastly better than a decade ago. Other bits haven't improved nearly as much, eg the HP 3458A is still one of the best meters in the world. The Fluke 5720A Calibrator is likewise an old workhorse.

[ClumsyPilot]

My building had a dialing system replaced with one that uses a phone line to call a mobile of each resident. It can also only assing one number. Now I get the call at work if my wife orders pizza, or if i am out of the country.

It also doesnt work at all if i am in tube, or when my building forgets to pay phone bill, or movike network craps out

[can16358p]

I think it's more like as things get more complex, there are many more edge cases to check and most are very unlikely to happen statistically/practically so manufacturers don't put enough thinkin/design effort in those "details".

Until, of course, it does.

[rabuse]

Exactly. Couldn't they just have some system where the door handles have a magnetic dead-switch, that reverts to manual operation when no power is applied?

[brokenmachine]

The battery might not have enough juice to unlock the doors, but still not be completely dead. Of course with good design that shouldn't be a problem.

[tw04]

But the handle DOES open the door. It’s just at your feet, quite clearly marked, instead of physically on the door. It’s specifically there so that if you are in an accident you can still release the door. It’s designed With the idea the car will see a road course and is far superior to a handle on the door.

It’s sad he died but I found that handle in the first 5 minutes of owning my first corvette. It has a giant red picture of the door opening.

[Symbiote]

When you're half dazed from a collision and the car is on fire, will your scared but unhurt 11 year old son know where this hidden lever is?

I did, on a 1980s car, since it was the normal door handle.

[tw04]

Hidden? It’s directly below where the “oh shit” handle is on the door, you need to move your hand less than 6” to pull it. Calling it hidden is completely misrepresenting reality. If my 7 year old knows where it is and insists on using it to open the door, I hope your 11 year old can figure it out.

[bumby]

The elements you're referring to are procedural mitigations to a poor design from a human factors standpoint. Those mitigations are always less preferred than managing those risks from an engineering perspective.

OSHA actually outlines the preference:

1) Eliminate the hazard outright (not possible here, you need the door to lock sometimes)

2) Engineer out the risk (they tried to do...poorly...with the manual unlock)

3) Administrative controls (e.g., the manual)

4) Personal protective equipment

[sokoloff]

> not having an emergency window breaker.

Tip for readers: if your car has removable headrests, they can serve effectively as emergency window breakers.

[dghlsakjg]

I’ve seen this tip pop up a few times, but it is worth noting that the way to break a window isn’t to hit it with the metal bits.

You have to insert the metal rod between the bottom of the window and the door card and use leverage to pry at the window until it cracks

[ClumsyPilot]

"manual release located on the floorboard by the driver's seat"

I am willing to bet my house that half the people who built that car would not find the lever if it suddenly caught fire (or any other emergency) while they are in it

[comeonseriously]

> Having random cables cut doesn't help the situation, but the issue was not knowing how to manually release the latch and not having an emergency window breaker.

Is it, is that really the issue?

[s1artibartfast]

It was certainly an issue. If you have a bright red override lever on the door, then they would have known and not had a problem.

[phkahler]

>> Having random cables cut doesn't help the situation

It was the battery cable or similar, which cut power to all the electronic means of getting out - including the other door. It was not "cut" in the sense of someone using a knife, it just came loose or similarly broke contact. This is a design failure, not a RTFM failure.

[phkahler]

>> Wait what, do Corvettes not just unlock and open when you pull the handle?

Nope, not that model.

I had the chance to take one of the Fisker Karma development vehicles home from work. Everyone said it drove great. I got in and realized the door latch was a button. The whole car way prototype and development parts. The window was kinda small to crawl through. I said no thanks. There was a loop of string in the bottom of the door pocket to manually open it. Still nope.

[jasonpeacock]

In my 2021 Honda CR-V this is a configurable option - you can decide which behavior you want.

For example, you don't want your kids to open the doors while you're driving. Or you don't want a car-jacker to reach through the window and open your door.

[errcorrectcode]

Child locks are usually different. Also, there is typically no child lock option for the driver's side front door.

[jasonpeacock]

These are not child locks. Child locks prevent opening the door regardless of its locked state.

This is about whether pulling the door latch auto-unlocks the door, or if you have to unlock the door first before pulling the door latch.

[bumby]

How is it configured? Electronically or through a switch on on the door jamb?

[jasonpeacock]

Electronically, through the settings in the touchscreen panel on the dash. These are not child locks, but rather set the behavior of the door latch when the door is locked.

[bumby]

Does it have a fail-safe configuration if electricity is lost like in the examples above? If not, the ability to change configuration may not actually mitigate the failure mode

[jasonpeacock]

Yes, there is a manual door lock button-thing on the door next to the door latch. Though honestly I don't know if that works when the power is dead. As cars move to "fly by wire" this becomes a larger concern - less mechanical linkages, more buttons/switches + wires.

For example to open the back you push a button on tailgate and then pull to open. That button is definitely not a mechanical latch, so if the battery is dead then you're not opening the tailgate.

This would be an interesting experience - go to an auto dealer and ask them to disconnect the battery, then see what still functions.

[jjk166]

Anything that's mechanically supposed to happen is irrelevant after the mechanism, with 2 tons of metal behind it moving at high speed, slams into something significantly more substantial than the thin layer of decorative sheet metal protecting it. You can not design things to be invincible, no matter how robust something is, with sufficient force applied in a certain way, it will fail. It's honestly an engineering marvel that people consistently are able to get out of their cars after an accident.

[silisili]

There was no accident here, unless I missed something. The guy just lost power to his door locks after he got in.

[jjk166]

I'm talking more generally about cars not always unlocking after an accident.

In this specific scenario, you still have a component failure. Something that was supposed to be connected wasn't. It would be nice if they designed a better fail safe but it's not a case of "corvette handles aren't designed to unlock."

[phkahler]

It's not about locked or unlocked. Pulling the handle is supposed to open the door. Locking prevents that. In this case, the handle doesn't mechanically unlatch the door, it does so electronically. With no power it is not possible for it to unlatch. Since locking is then a software feature, we might say those doors are locked by default and require software and electronics to make them open. Because of that there is a mechanical thing you can pull, but nobody knows where that is or that it exists unless they are told.

[ntp85]

"You're holding it wrong"

[dv_dt]

This is why I carry a safety hammer utility tool in my cars for breaking glass and cutting seatbelts.

[BuildTheRobots]

I always thought this was the case until I owned a 2004 Nissan and accidentally locked my brother in.

[gambiting]

On most(all?) Modern cars you can't unlock the door from the inside if the door got locked from the outside. I think it was made law to work like this? In order to prevent thefts where someone just runs a tiny rod through an opening and pulls a handle - that doesn't work anymore. If you get locked in the car while inside there is no way to open the door, you'd have to break a window to get out.

[maxerickson]

What do you mean by modern?

My 2013 car has a physical lock pull, which the door lever is connected to, so the lock opens when you pull the lever to open the door.

[outworlder]

> On most(all?) Modern cars you can't unlock the door from the inside if the door got locked from the outside.

Teslas have an (emergency?) mechanical release on their doors. At least the Model 3 does. Given that you can't 'lock from the outside' in the ordinary sense, if this law exists, there must be some leeway.

[filoleg]

Ironically enough, Tesla Model 3 emergency mechanical release on doors is positioned so technically “well”, passengers not familiar with how the door opens in a standard way from the inside (by pressing a glowing button on the door) tend to pull on the emergency release first (which is located on the door right next to the standard release button).

Happened to my friends at least a couple of times when giving them a ride. Imo, not a bad situation, because the worst case scenario here is that they will accidentally use an emergency release instead of the standard one on their first try, which will only trigger tesla to make a warning sound that the emergency release was used. Definitely works out better in a real emergency situation too, compared to cars with difficult to find emergency release handles, given people not familiar with Tesla doors tend to reach for the emergency handles in those by default at times.

[fionaellie]

From this video, I learned that it's quite hard to find, and if you're in the back seat, there's no emergency mechanism at all. https://youtu.be/QCIo8e12sBM?t=239

[bigiain]

> If your car door uses electricity to open, you best know what to do when that system fails.

If your trillion-ish dollar advertising company masquerading as a social network has doors that use electricity and dns lookups to open, you best make sure your office staff and data centre technicians know what to do when that fails...

[ClumsyPilot]

Nah, personal responsebilityb is for loosers and plebs, when a massive company craps out or causes hundreds to die, its an unforeseeable accident

[jmiserez]

Regardless of model it's a good idea to put a emergency hammer / glass breaker in your car. (addendum: also to rescue someone else, not blaming the driver)

[beeboop]

If your headrests can be removed, the metal poles in them work well for this too. You jab one of the poles into the window seal, then pry like a crowbar. If done in the corner of the window it will break easily.

[shard]

I looked it up on YouTube since I wasn't sure how that would work. Here is a video I found: https://www.youtube.com/watch?v=tZTa8Nh0VlE

[boringg]

That was helpful - thanks. Hopefully will never have to use it.

[jsmith45]

Be careful with those. Plenty of cheap ones have metal hammers that will simply bounce off the window like the window was rubber (I assume the cause is wrong metal used, or point not sharp enough). And this is assuming tempered glass.

When AAA tested 3 different hammers, only 1 of the three successfully broke tempered glass. All three punch style tools broke the tempered glass.

But a lot of car windows now have laminated glass. While the tools may be able to shatter the glass for those, they still stay in one sheet, (just like shattered windshields in most car, since those are laminated glass too). And it is really hard to break through that shattered but still intact sheet, with neither style of escape tool really being much help.

[errcorrectcode]

https://www.amazon.com/s?k=rescue+hammer

A quality rolling ballpoint pen would also work (given enough force) because it contains a small ball of tungsten carbide.

My knife also has a tungsten carbide window breaker on the base of it.

[olivermarks]

I have the one with the seat belt cutting blade in the handle hanging on a loop on my truck dashboard. Separately I think all cars should be required to have manual door locks (as well as electric locks if it's a luxury car). I also think all BEVS should have a manual battery ungang lever for trapped energy emergencies.

[calsy]

Can also come in handy when road raging.

[account42]

> Death should not occur due to failure to RTFM for a door.

Death should not occur due to failure to design a door that can be opened from the inside in all situations without reading any manual.

[iso1631]

I assume that if my battery was flat, pulling the handle on the inside would open it. I'm not at all sure though, it's been nearly over a decade since the last time I had a lock which you pushed up and down.

I have a emergency hammer/seatbelt cutter near the gearstick just in case.

[duck]

> Isabel Moreno told reporters he owned a 2006 Corvette and was trapped inside when the battery went out. Fortunately, he said eventually the battery started recharging itself enough to be able to roll the window down, and he was able to get out safely.

Curious how this is possible or was this just misreported?

[megous]

Googled it for you: https://electronics.howstuffworks.com/everyday-tech/question...

[EvanAnderson]

Yikes! Makes me think twice about being in a newer Corvette.

The DeLorean (DMC-12) is known for having the lock solenoids that get stuck energized when a relay fails. Fortunately you can pull the relay to de-energize the solenoids. (Climbing out of a window on a DeLorean isn't an option for normal-sized people.)

[WalterBright]

I realized my key fob battery was dying. I had no idea how to open the doors without it. I figured I'd better google it.