<Slightly Informed Speculation> I don't own a Telsa but I do work in the car industry. A modern car, with a new infotainment system has separate computers for

<Slightly Informed Speculation> I don't own a Telsa but I do work in the car industry. A modern car, with a new infotainment system has separate computers for displaying fun stuff, and running your engine. Their connected with a standardized CAN serial bus. The idea is that if the complex infotainment system (Windows CE on Fords, Linux on new high end GM's) fails as its a complex operating systems + multiple processes. It won't take your engine down with it. I figured Telsa is pushing for this in part because they don't have separate controllers for engine + fun in car stuff. They just have one computer to cut costs. I know both Ford and GM have played with this model and they hated it, primarily because of security and reliability concerns. This makes it equal parts publicity stunt and R&D. They can claim their cars are more secure then other American Automakers. Who hide behind proprietary internal standards to ward off would be hackers. And the claim will be rightful. </Slightly Informed Speculation>