>> over the course of a grueling week, danny and stu meticulously plan out and shoot various stunts. >> last time i was too scared to jump this. and i kind of still am. it's horrible. >> he likes to push himself really hard, so there's a big element of danger involved in what he's doing. >> i had a lot of crashes. you know, nothing ever happens first time, that's for sure. >> but when danny nails a stunt, it seems the to defy if laws of -- to defy the laws of physics. >> i would say the favorite clip is riding along the top. it made me feel like a kid when i was filming it. >> the big draw for a lot of people is probably riding down