The sound was pure Ferrari; I know it well having been in front and behind it on tracks.
There were some pretty amazing controlled slides that would be difficult without the balance of a Ferrari; certainly no sedan (of the era) could pull it off.
Some tight spots, too (like when he went up half on the sidewalk) that I doubt a sedan could fit in.
I go with the filmaker’s own story — he stuck the camera on his Ferrari.
Any which way he did it, the end result is spectacular.
Did the Pink Floyd boys David Gilmour and drummer Nick Mason did the documentary about the PanaAmerica. They both drove and were big Ferrari collectors. Mason still has a big collection.
http://www.youtube.com/watch?v=I6iCt21KP2I
http://www.youtube.com/watch?v=OrZIm8RBEqE&feature=related