If we turn to the crashes by others, I have this very talkative friend. To avoid going berserk, I ride behind him enough so that the words become indiscernible. He just needs the presence of someone to talk and everybody is happy. We go down a small street. While it is legal to park there, it is not common. This day there is a car parked there. The friend is immersed in his talking and from his trajectory I begin to sense what is coming. I start yelling from behind to watch out for the car. It makes no difference and he blasts at a full speed into the trunk of the parked car in broad daylight.