It's like that anywhere and everywhere there is street racing. These things happen because everyone is trying to get the best possible view of the race. You have the dude infront spectating, then the dude behind him has to step out further onto the "track" just to see, then the dude behind him now has to step out even further just to view the race and so on and so forth... Now if I'm the guy infront watching the race, then you know EEverybody behind me is going to get fucked up because I've got a Big fucking head!! Everybody is going to get hit down that track!

Hey, at least the guy was smart enough to shutdown before plowing into the crowd.