Re: "Chrysler could have solved all its problems if it had only used a basic"...
It's hard to air gap it.
If the entertainment system and the displays have access to the Internet, and also need to know information about the electronic management systems even just for warning messages like "the handbrake is on" when you are moving, then there can't be an air gap.
Some sort of regular unidirectional broadcast by the electronic management systems, without any signals electrically possible in the opposite direction is the best you can hope for if you want to prevent the possibility of control in the other direction.
Biting the hand that feeds IT
