While there are stainless steels that do resist corrosion quite well, the Cybertruck’s 301 is not one of them, being one of the cheaper and, well, less rust-proof than 304, 316, or some of the more exotic alloys or non-steel solutions. While the reason they didn’t use these better materials is pretty clearly cost (301 is about 50% cheaper than 304 currently), I’ll note that the DeLorean used 304, and a friend who owns one says he has never seen rust on the body panels, just the frame, and then he cried a little bit.
