Hmmm I had to think about this for a while...there was a 900hp R34 which was quick but it tended to go sideways as much as forwards when the loud pedal was floored. I have been lucky enought to drive a few Group A touring cars over the years but a highlight would have to be 2 laps of the Wellington Street Circuit in Murf's HRT Commodore back in the the race there, 1996 I think. That car had some mumbo !! I was supposed to be driving it in the parade with a boy who had cancer and it was his "wish". I was meant to do one lap and come back in but I ran too far down pitlane and you can't reverse in the pits so they sent me out again for a lap on an empty track.....bugger. It took a week to get the smile off my face.