"Safety critical" isn't just the drivetrain. I don't work in automotive and won't pretend to understand all the rules, but off the top of my head, some things that my car uses the head unit for:
reply* Backup Camera
* Turning traction control on/off
* Turning auto hold (maintaining the brake pedal while stopped) on/off
* Window defrosting
Many cars are even more integrated - are there any physical buttons inside a Tesla or is it all through the touchscreen?
> Many cars are even more integrated - are there any physical buttons inside a Tesla or is it all through the touchscreen?
replyIf you're going to use the worst example as the comparison, then we'll get no where fast.