This had to be some kind of Superman kick or ninja super kick to make the car loose control and hit the wall. If every time a driver was startled by a bump in the road or something hitting the top of the vehicle there would be a lot of wrecks out there! I do not see where the biker is at fault and certainly not criminally as well. Again, if we had the tape from the beginning of this show the answer would be more clear. I would be hesitate to write the biker a ticket a leaving the scene as I do see him involved in this accident at all. Not so bright absolutely, criminally I would not pursue it. JMO