It seems probable to me that, at some point, a human will do something unpredictable (possibly on purpose) that will cause an unavoidable accident. With trillions of mile driven every year I don't see why it is unlikely that there is at least one incident where there is potential injury to one party or another and the action of the car will define which get injured.
Dude... This already happens multi times every hour around the world. What's your point? That it will still happen with robot cars? It might, but it'll happen only rarely rather than the whole fookin time.
It seems probable to me that, at some point, a human will do something unpredictable (possibly on purpose) that will cause an unavoidable accident. With trillions of mile driven every year I don't see why it is unlikely that there is at least one incident where there is potential injury to one party or another and the action of the car will define which get injured.