On TED.com Goggle expound the virtues of driverless cars and tut at one motorist. Which demostrates what I was trying to explain.

http://www.ted.com/talks/chris_urmson_how_a_driverless_car_sees_the_road

At one stage the video shows two driverless cars and a sensible gap between. And a motorist drives between the stationary cars stops then drives on. Obviously the driver spotted that the driverless car would always stop. Just as well Goggle got their algorithms sorted on recognising a car sidewas and not moving off. Now had that been at high speed the occupant would have whiplassh by now. Goggle wouldn't dare show that incident.