A nasty wreck when Jimmie Johnson tried to bump draft with Kurt Busch.  Kurt hit the outside wall, then back down and skipped off the inside barrier, but it was Elliott Sadler who hit the inside barrier head on hard. Certainly one of the hardest hits in NASCAR history. The engine was even separated from the 19.  Sadler was released from the infield care center and is okay.

http://i.cdn.turner.com/nascar/.element/swf/2.2/sect/video/nascar_embed.swf?context=nascar_viral&videoId=cup/2010/08/01/cup_poc2_high_three.nascar