Talladega Superspeedway is a breeding ground for huge crashes and the GEICO 500 saw "The Big One" on Lap 159.
As the field drove down the frontstretch, Kurt Busch bump-drafted Jimmie Johnson hard down the track, eventually turning the No. 48 Hendrick Motorsports Chevrolet sideways as the drivers entered Turn 1.
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Once Johnson hit the wall, all hell broke loose and a total of 21 cars were involved in the crash, including three of the four Joe Gibbs Racing Toyotas
"He just drove through me the whole front straightaway," Johnson said of Busch over his team radio.