> Crossing the street in front of a car is a leap of faith, not troubling at all when there’s a human there, but a robot? There’s no body posture, no gestures, no facial expressions, nothing to go on. There’s a computer in control of a powerful heavy machine that you’re just expected to trust.

This is something that's very solvable though. Robot cars should and almost definitely will have a way to communicate to pedestrians. I agree with the general point though around a greater possibility of very out of the norm mistakes.