Hacker News new | ask | show | jobs
by solox3 846 days ago
Modern vehicles are still made with steel, if I am not mistaken (since I own two). I also think the designers did a fine job over at Tesla. It's more baffling that the automaker decided to forego a layer of clear coat---just like with all other cars---because they think they can defy the elements, or up-sell you on that $5000 wrap that they are offering.
4 comments

That depends. Many auto bodies are made from aluminum and plastic these days, while the ones that continue to use steel for some body panels coat them not just with clear coat, but also paint. Chassis/frames are steel, but not exposed directly to sunlight, and typically have a coating as well.

Bare, exposed steel is pretty dumb in all things except perhaps looks (until it rusts).

> not just with clear coat, but also paint.

Most are phosphated, then e-coated, then primed, then painted, then clear-coated.

Thank you. This seems to just further emphasize the absurdity of selling bare stainless vehicles to consumers that drive on public roads, in all kinds of conditions including salted winter roads.
It's a choice. All engineering choices have consequences, and no material is perfect. It doesn't seem much more absurd than other parts of the vehicle, to me. Bare stainless has been used on other vehicles before. It provides a certain aesthetic.
It is a choice. The choice is also motivated by a Big Idea: ELiminate every part you don't need. This sounds like a good idea to the point some people will adopt it uncritically, but when you start eliminating parts, like paint, or an anti-pinch sensor, or LIDAR, that you might actually need, you just create technical debt and future recall liability. Bad dogma.
To be pedantic, this was more of a cosmetic choice rather than an engineering choice.

The other bare stainless vehicles learned the same lesson (and are not produced today).

Engineers deal with more than just functional design requirements. There were also undoubtably other requirements pertaining to manufacturing, cost, and cosmetics which were a factor here. If cost and manufacturing weren't a factor, they could have just CNC'd the panels out of very fancy stainless grades that are a pain to stamp and cost a lot.
Modern vehicles use plastic or aluminum on the most common rust points. Rockers, wheel wells, bumpers.

Go look under the car, that’s where all of the steel is. Unless your car is new or has literally never seen water/salt, that’s where the rust is going to be.

wow, I think this is the first time I've read someone in support of the dealership offering the clear coat option.
I'm curious to see how the material looks after a few years in the wild. If it were clear coated, we wouldn't get a proper stress test. Solving this problem is basically the only reason for the Cybertruck to exist.

It'll be a great *eats popcorn* scenario for those who didn't buy one.