Computerworld - https://www.computerworld.com/article/3238035/apple-ios/apple-once-again-confirms-it-wants-to-ipimp-your-ride.html#tk.rss_all
Who dies? What happens when an autonomous car needs to make a decision between crashing into another car, or that child crossing the street? How long will it have to take that decision? Who dies?
Making cars is really complicated
While iPhones are pretty complicated, cars are both complex and life-threatening.