Try this. Forgot the link above. I'm a hot rod O/B guy and I thought it was incredible listening to those big car motors screamin their guts out when they threw a brick on the gas pedal and left it there! Very impressive.
Watch how close they come to the bank when they spin too. And the channel marker behind them.
GONZO!
http://www.youtube.com/watch?v=V0K-WfhsntI

Here's a direct link to the first one too. Amature video from spectators on the shore by one of the tight turns. Listen to their commentary.
Perfect!

http://www.youtube.com/watch?v=Skr4L7ZYb_o

[YOUTUBE]http://www.youtube.com/watch?v=1xikQl9vhxc&feature=related[/YOUTUBE]

[YOUTUBE]http://www.youtube.com/watch?v=V0K-WfhsntI[/YOUTUBE]

[YOUTUBE]http://www.youtube.com/watch?v=Skr4L7ZYb_o[/YOUTUBE]

oops didnt see you guys already hot linked it, plus found another one from above. Guy seemed to enjoy the spin lol

lucky for them it was flat calm, i have done those spins on purpose in a cat but at 35-40 mph, that must have been a scary ride!