While I’m only thinking of letting a computer push the brakes of a vehicle, some are thinking more . Google is experimenting with cars that drive them selves. Until now they were always manned with a driver who can correct if the car is about to do something stupid. Some challenges have been helt with unmanned cars, but they were not on the road.
One of the benefits of the autonomous car is said to be a more efficient utilization of the road . Most efficiency increase will be created only if all cars are autonomous. Take for example the situation given in  with all the cars at a traffic light starting at the same time, instead of one after the other. In this view, a non autonomous car will be expelled from traffic. One day or the other, people who don’t feel safe in a driverless car will have no other choice.
Is this an argument against the driverless cars?