We have a ton of self driving cars out here and they are a menace. When they see flashing lights they just stop dead where they are and the emergency vehicles have to find a way around them. They stop unexpectedly all the time. Your best bet when you see one is to speed up and get around it as quickly as possible. They disrupt the traffic around them because they don't act like human drivers unless you cinder high/drunk/senile drivers. And the accidents are never considered their fault.