There is a video/DVD called "incar 956". It consists of on board footage of Derek Bell driving the Rothmans porsche 956 around: Silverstone, Nurburgring, Le mans, SPA, Brands hatch, Fuji and Kyalmi. It is truly a superb video. The Le mans lap is good, 240mph down the mulsanne straight (with a slight kink). The Nurburgring is also impressive. At one point of the lap Bell is doing about 170mph through a series of bends and suddenly his team mate Jacky Ickx goes flying past on a qualifying lap. You can buy the video at
www.dukevideo.com or download it with emule (takes ages).