Imo modern cars are basically small computers and everything else(seats,doors,wheels)is peripheral. I mean it is 2017 after all, don't you think it's about time we accept that cars are computers? Sure, we used to need humans to "complete" the computer part, seeing as we didn't have motherboards at first. But now computer is the core part of car and even humans aren't necessary. Why even bring your cell phone when your car is a cell phone? It's possible Apple needs the car to compete in a post cell phone world.