Imagine something like a dangerous situation -- there is an oncoming fire or flood, and you need to get out of there, but your self-driving car decides to do a precautionary stop because one of the sensors stopped working. People are totally underestimating the intelligence required to make these types of decisions. Surrendering your mobility to a program is a much bigger hurdle than people think, and the bar is much higher than being able to successfully avoid collisions.
