 In this video it starts out with two drag cars revving up at the starting line getting ready to floor it. They take off and get about half way down the track when they both start to spin out. I don't know if there was something on the track down there but they seem to spin out around the same time. The orange car on the left actually rolls on it's side spitting sparks and flips over before rolling into the side fence. A huge piece of metal also flies off of it into the air. Both of their parachutes deploy as they bounce and slide down the track. Apparently everyone was fine after the crash though.
Two dragsters flip over on their way down the race track in this video. Source: Big-boys.com | 
