. >> this is a truck of swrimy derek.e is the second man to successfully back flip a mega truck at the west georgia mud park. >> think about how much weight that is. >> do you think the drivers are employing to find a way like trying to get more. >> it's four-wheel drive that pulls them up and over. the truck, though, doesn't do this without some damage. you can hear the truck kind of rev towards the end. looks like he broke the drive train there a little bit. doesn't go anywhere after. swrimy is out, and he is unjufrd. >> he is not the only one to try it. >> here's al abercrombie. it's this truck called adrenaline rush. >> oh, no. >> that's bad. >> a little bit of a mark there. >> the wheels fall off. >> well, it's pretty cool too. watch what happens. adrenaline rush hits that, again, near vertical wall. this is the shocks just smashing off right at the top of the truck. then when the truck smacks down on its rear wheels, that just gives it enough gravity to rip the whole thing right off stwloosh that thing is not in goo