Considering the recent headlines about the decompilation and reverse engineering scenes, I doubt it!

If anything, the centralized control units of modern cars may make this sort of thing easier. A 2000’s car has more distributed pieces of vehicle control units (more similar to microcontrollers) while a modern EV built in the style of a Tesla has fewer compute components.

So in 50 years you’ll have some kind of recompilation scene where those computers get replaced, almost like how people replace their router software with OpenWRT or the people at vintage computer festivals who stand up reverse engineered AOL Instant Messenger services.