I just saw a guy riding a BMW today w/ his girl take a fall. He was coming down a hill to a stop sign. He looked left, and the right but neglected to look left again. He pulled out as a car came from the left & beeped him. It sort of startled him, and he put on the brakes while he was still at an angle to make the turn & ended up falling over. We ran out of the car to help him push bike back up & I heard he was really pissed! I'm not sure what I would have done in that situation, but I would probably have fallen over too.