Hi Chris,
It is a silver grey E46 M3 (M33AGD) - It would be great to see any pics you got.
I was there with a few friends as well - did you get any of the following cars?
White Renault R26R Megane (Saw the one you got on posted earlier, great shot)
Silver Porsche 997 Turbo
Orange Sylva Striker (kit car)
Thanks,
Ali