Here is a quick video of driver Jae Kim on Nishi Long course at Ebisu Circuit during the Autumn Drift Matsuri 2012. He was doing some high speed drifts on the long straight when he got hooked up and ended up upside down. He was ok with no injuries and the other drivers and staff were quick to get him out of the car.
On the other hand my Contour HD cameras managed to stay on the car and rolling. Only one broken suction mount.
Check out http://Jyuroku.com for more, and a full Matsuri video coming soon.