http://www.youtube.com/watch?v=uzgbm...eature=related
"Yamaha R1 offroad special build for the Erzberg rodeo 2009. Probably the most powerful Motocross machine on earth."
Must try that someday

Though to be fair, you wouldn't get the lightweight chuckability (yes it is a word now!

) from a proper motocross bike. Meh, still looks fun
Sorry if this is a repost, not seen it on here before...