ive seen one of these before and those poor sleds. i saw one out of control almost take out a croud, one went off course and took out the fence and rolled, and one threw a rock threw the heat exchanger and burned down. theres no way id try it unless it was straight water no mud. but fun is fun i guess.
Saw one near Missoula a few years back. The 1404 Union Bay Skidoo was faster than the full nitro-methane mud boggers that were making thousands of HP. HAHA.