Hi 1stNC.
No I didn't take my car, but I might take it next time just to run around in. That way I could get some decent photos of the others at various vantage points. As I didn't have a car this time, I was always stuck in one place.
Mind you - co. car will be going nowhere near the circuit itself!!
link -
http://www.bmwland.co.uk/talker/viewtopic.php?t=34245