I found this video on youtube today. I believe its from the Pro 450 heat race at the Extreme Outlaws supermoto race last weekend at the Grand Sierra Casino in Reno, NV. There is some great action in this video. The rider (don't know who) gets the holeshot then crashes in the dirt and battles back.
The track looks like it was a lot of fun. That over/ under bridge jump looked really cool!
The main is less action packed but can be seen here: http://www.youtube.com/watch?v=53VGIKy7aks
