ill try it in around 9 hrs from now using VMWare fusion.
Also, @Shambler, if u can get Vista/XP/whatever drivers for your G25, which wont be impossible, you can probably play it inside VMWare fusion as it is basically like running windows (a better version of Parallels).
I play an old game called Rally Masters with my Logitech Driving Force GT and it works fine, tho the game is so old theres no force feedback.
EDIT:
Heres my results:
Menu works, u can see the 3D car and everything no glitches.
Starting a race... works... BUT when the race starts, all u see is an epileptic white flashing screen.
EDIT2: