That is odd, never really seen rust on any of the non-stainless steal cars I encounter in my day to day life. Not unless they are really old and damaged in significantly other ways.
New cars are not in steel, but in aluminum, which does not rust (hence why metallic boat parts are in aluminum).
That was my point. Most cars don't have this issue because they use materials that don't rust as is. Why is Tesla choosing to use something that is hard to work with.
I mean, the obvious alternative would be to use aluminum, which doesn't rust at all and has twice the strength-to-weight ratio.
Yes, I know, it was just a poor joke :/
Stainless is extremely prone to rust when exposed to salt (i.e. near an ocean, or worse, on salted roads in the winter time.)