Self driving cars? Whats the point?

I have my doubts that it will ever happen. Might be ok in california where roads and sensors don't get covered in snow, slush, salt and whatnot. Canada? Ha. Oh but you have to clean the snow off your sensors before you start out. Well, we have idiots who don't bother cleaning snow off their windows now and you expect them to clean sensors?
Liability will be an issue too. Why should I insure it for liability if I am not in control? Then who is sued when it hits someone? The manufacturer? Me?