>> it's an internet juggernaut gaining more than 31 million hits. the video's directors, norman krueger and dominic yunker, brainstorm another misadventure for the daring duo. >> had to be more extreme. had to be bigger. and so i thought about this -- this car crash. >> before they create the big smash, the guys add legitimacy by filming a series of other trampoline stunts. >> jumping over a dog. jumping into a swimming pool. jumping over a cow. >> everything up to the car is real. >> like the long con. if the first three or four videos seem very real and are real, you have to believe that the last one is real, too. >> for the grand finale, the directors lock down the camera and shoot three different actions. >> we set the camera up, then you don't move it the whole day