Cars, turn poles, and finish line models by Slick.
Ground Textures by Demon.
Sponsor banners by TRI (from CART Precision Racing)
Anything else I failed to mention (don't know what, but you never know) credit goes to the author. 

Thanks go out to my Beta testers Rooby Haught and Eddie Carmicheal.  Rob especially since I take a perverse delight in aggrivating him sometimes. :)  Believe it or not Rob, your advice is somewhat valuable to me! 
