@BillRM,
Bill,
Why do you think humans should be allowed to drive on superhighways? Humans make deadly mistakes on highways everyday. Self-driving cars won't "almost" fall asleep at the wheel.
Give me an argument against self-driving cars that isn't a better argument against human drivers. (I will give you the hacking argument as the only one, but I think that there are proven solutions to prevent that).
Self-driving cars should be compared to human drivers. Human drivers do some really stupid things that causes thousands of deaths each years. If self-driven cars significantly reduce the number of deaths from driving, don't you agree that makes them worthwhile?