Very nice video.
The driver is actually Derek Bell.
I have the complete video with incar footage from his Porsche 956 on the Fuji track, Nurburgring Nordschleife and Le circuit de la sarthe.
On the nurburgring, he does a 6:41 lap. not bad at all. It was apparently the last year where such cars would race there.
On circuit de la sarthe, he actually does two laps, one with comments, one without the comments.
It's available somewhere on emule if you're interested, or i'll find a way to post it.