Transcript for Stunt Man Surfs on Ocean With Motorcycle
Finally tonight here, walking on water. Shall we say riding? Surfing on two wheels. So we asked the stunt man, how did you pull it off? Take a look at this. It sounded like a pipe dream, racing a bike across the waves. Those in the water stunned. But for Robbie Madison, it was a dream come true. I grow up surf, riding motor cross. I wanted to combine the two. He was a stunt double in this roof top chase in "Sky fall." Take a look. Outfitting his bike with skis in the front and in the back. And the back wheel is actually a paddle tire. This air bag to keep him afloat just in case. The only thing thing he needed was a 20 foot swell in the waters off tahiti. It's taught me a lot about myself. I made me excited about my Knicks adventure. Thank you for watching here on a Tuesday night. I'm David Muir. Hope to see you back here tomorrow. Have a good evening.
This transcript has been automatically generated and may not be 100% accurate.