A last-lap accident sent rookie Kyle Larson's car sailing into the fence that separates the track from the seats, and large chunks of Larson's car landed in the grandstands.
The 12-car crash began about 200 feet from the start-finish line as the front-runners approached the checkered flag. Leader Regan Smith attempted to block Brad Keselowski for the win, triggering a horrific pileup that could have been much worse.
The car itself had its entire front end sheared off, with a piece of burning engine wedged through a gaping hole in the fence.
Ambulance sirens could be heard wailing behind the grandstands at a time the race winner would typically be doing celebratory burnouts.