major hit with a heart stopping collision all caught on camera. >> david hugo on the right lane looked like his car moved out of the groove towards the right guard rail and tommy looked like he was going right down his lane and david's car actually darted across the track and kind of hit tommy adams' car in the corner panel which sent tommy's car right. we knew that was bad. >> in the business of drag racing, everything could change in a fraction of a second. when david's car steers into tommy's, traveling at 150 miles per hour, that's all it takes for things to go seriously wrong. >> tommy's cut across the guard rails and when it went right off the track into the grass, there was a small hump right there when you went off the track and he hit it, he hit it just right. the car just started barrel rolling. it went up in there and just started flipping. it looked like it was going faster there than it was actually on the race track. kind of a strange thing to see a 3,000-pound car flipping.