Quick poll: who here doesn't want infotainment software in their car? How about keeping cars limited to 1990s level logic: basic ICs, fuel / emissions / safety control (abs, airbags). Something like 1990s Mazda with a japanese-size pickup, miata & basic sedan / hatchback.
Why get rid of 3 decades of security improvements?
You could save all the great stuff and still operate the car with no software, simple firmware, and 2002-era ICs