Self Driving Cars are like Adult Bumper Cars

California allows testing self driving cars on public roads. 4 of the 50 permitted cars have gotten into accidents since September. 

Of the 4 accidents, 2 were caused by the self driving equipment, 2 were caused by the driver operating the self driving car.  0 of the 4 were actually liable for the accidents. There are a lot of bad human drivers in California it seems.

Dallas Morning News