^ I think you're confusing two documentaries.

The Group B documentary is called "Madness On Wheels - Rallying's Craziest Years" http://www.imdb.com/title/tt2372307/

The Formula 1 documentary from the same people is called "Grand Prix - The Killer Years" http://www.imdb.com/title/tt1954483/

Both are easy enough to find on various streaming places on the internet. (note there is footage in both but especially in the Formula 1 documentary that's not appropriate for everyone)