A huge, multi-car crash on the final lap of Saturday's Nationwide Series race at Daytona International Speedway injured 28 fans, some seriously.
At least one NASCAR fan suffered life-threatening injuries.
An amazing raw video of the crash quickly went viral:
As CNN reports, shredded debris flew into the racetrack barrier and beyond, with some reaching 20 feet up to the second level of the track's stands.
Tires and parts flew into the crowd after the crash; 14 of those injured were treated on site and 14 others were transferred off-site to seek medical help.
Halifax Medical Center reports that one adult underwent surgery for life-threatening head trauma, while a 14-year-old is in critical condition as well.
Kyle Larson, the driver of the car torn to pieces, was not hurt.
The Daytona 500, the first and biggest event of the NASCAR racing season, takes place at the same track Sunday, with Danica Patrick in pole position.
It's a dangerous sport ... for drivers and spectators.