Hacker News new | ask | show | jobs
by empyrrhicist 1418 days ago
> They are way too heavy and take up too much space.

Can you clarify? Currently have a Chevy Bolt and it is great...

1 comments

Sure. Electric vehicles have enormous batteries which weigh thousands of pounds and take up a substantial portion of interior volume. We’re at the bleeding edge of battery tech and the best we’re able to achieve is 300ish miles of range. We can’t realistically expand this to 500 to 1,500 miles anytime in the next decade or so.

As example compare the Model 3 and a CRV. This is an absurd example because the CRV is an SUV, but the comparison is telling given the weight differences.

The Model 3 weighs 4,200 pounds with 97 cubic feet of interior passenger space.

A Honda CRV weighs 3,500 pounds and 103 cubic feet of interior passenger space.

So we have a smaller car that is quite a bit heavier and it’s almost exclusively due to the battery. Tesla can’t cram more battery into that car so the only option is to dramatically increase energy density. There is nothing in the horizon except incremental improvements.

I think you're missing the point. 300 miles is not my ideal and, yes, change may or may not be incremental. I'd be happier with 1000m. But 300m is enough for me to buy one now. And that is progress.

And I think your point on space is out of date. I have no idea about the Tesla M3. In my mind I hate how that car looks and so I've never even tested one. But, for space, try an ioniq 5. Magic.

... yeah, but it's more than good enough for actual use, and moving away from internal combustion is important. Internal combustion cars can't go 500 miles on a tank of gas either, and trips longer than 300 miles are a tiny, tiny, tiny minority for most people.
>... yeah, but it's more than good enough for actual use

For you.

>Internal combustion cars can't go 500 miles on a tank of gas either, and trips longer than 300 miles are a tiny, tiny, tiny minority for most people.

Internal combustion doesn't need to go 500 miles on a tank. Gas vehicles can go 300-400 miles and then add an additional 300-400 miles in <2 minutes.

Hydrogen vehicles can have that same benefit.

> For you.

For a large number of people. Nobody is claiming EVs are ready to replace all use cases for ICE vehicles, that would be silly. It is equally silly to point out shortcomings of EVs and say they're irrelevant in the current marketplace.

Also, level 3 charging is pretty fast - it's not as fast as filling up on fossil energy, but the bigger issue is simply one of availability. If there were even half as many charging stations as gas stations, the feasibility of longer trips would change considerably. You'd be trading a slightly slower trip for vastly reduced costs.

This isn’t true, there is no hydrogen filling infrastructure at all, not at 100 miles, 400 or 800. Power outlets… or heck even super chargers are everywhere.

“Just install a network of hydrogen filling stations, and hydrogen production facilities, and trucks that ship hydrogen daily to all of those filling stations” … ?