. >> kyler vick here with the por studs team standing on a 7 foot platform.tting himself all pumped up. what is kyler going to attempt on this day? >> a back flip. >> he's going to attempt to back flip over this speeding car. this never ends well. >> don't do it. no. >> oh! >> hold on a second here. yeah, kyler, the por stunt team has had a string of fails, but kyler nails it. >> yeah, that is the face of someone who didn't just die. >> craw, kyler's like hey, i'm not going to have a huge health insurance bill. >> he didn't get burned this time. >> not this time. so let's move onto something a little less dangerous, dangerou, mountain biking. this looks a lot of fun to play around with, although the few times they were practicing, they said -- >> guys, it's a little funky, bro. >> oh, it's funkly, but it's worse than it looks. >> this is where the video gets a little crazy. >> it gets real bad. they immediately put on a tourniquet and start applying pressure because he's got a hole in his thigh right where that femoral artery runs. that can be deadly. thankfu