No one would waste a cent on developing autonomous driving technology if that were the case. They're not doing it because it's exciting, they're doing it becaus

No one would waste a cent on developing autonomous driving technology if that were the case. They're not doing it because it's exciting, they're doing it because it'll be cheaper in the long run. If something goes wrong in a plane you need to land it, which is a pretty delicate operation. If something goes wrong in a car, all you have to do is get off the roadway and stop.