It was a motorcycle accident, the people in the video are saying that one of the involved in the accident (it was a collision between a motorcycle and a car) crossed the intersection when red light was on but nobody was able to confirm whether it was the motorcyclist who failed to stop or the car driver. The dead man was run over by the wheel of his own motorcycle which ripped out his heart out of his chest but it continued beating on the road to the horror of the presents. Notice the extreme coldness of the meticulous cameraman. Really. All this mess occurred in an interior city of the Brazilian state of Espírito Santo (saint spirit) – a relatively calm coastal state.