Here is a carset addon for the 66 Mod that is lite enough to be more than Voodoo card compatible yet IMO the cars still look pretty well detailed. The 66 Mod team did one wicked job on these cars but unfortunately the 19 different car folders will not allow me to use this Mod without a further reduction from a max 256 X 256 pixel size. The majority of the mip files are 256 X 128 in size with the dashes and wheels 256 X 256 and I think look real nice. Even the non-3dfx card user 
with a lesser cpu will notice an increase in frame rate.

As always,first back up your cars66 folder and then just extract the appropriate folders to the  clean car folders containing just the dat files and Gem images. 

KWB  1Feb10