not that one
this was one worker working on the back of the car (gear box?) while it was stopped
as all of the other cars were doing there figure eight driving thing during the flag, one guy decided to speed past them all and right in to the back of the stalled car thus cutting the mechanic in half behind the trunk of the car
the rear ended and stalled driver, gets out runs to the back of the car, sees his mechanic cut in half and still moving (creepy) he starts crying and going insane