I don’t have a whole lot of backinfo about this video, but apparently it’s from Brazil. One thing I was told is that the members of the public saved the biker’s life by applying pressure to ruptured arteries.
The video shows a biker with his lower body mangled by a truck. The video starts with medic already on the scene, loading the victim on a stretcher. As he’s flipped over, the extent of his injuries becomes more apparent.