AUTOCAR mag ran an article in mid 90ies on a yellow RUF 911 going berserk on the nurburgring. the first link's the vid for it. They actully managed to blow the rear left trye at 180MPH on the second run, the explosion ripped the rear bumper right off the car. The stunt wasn't recorded on the vid tho.. try to get hold of the mag. its there.
second ones a red 996 Ruf Turbo R going on a sprint with a BRABUS SL. Think its promotional vid. run looks rigged.
yellow 911
red 996 VS BRABUS SL
source:r-a-c-e-r.net&kaptur.net