I've got a disk with around 500 tracks on it, plus an editing program that lets you insert all kinds of things in the game like rims and tires, even the old Mickey Thompson stadium truck bodies. There was a site that I used to go to that I got the disc from. A bunch of guys would make tracks and post them for everyone else to test out and give feedback. The guy that owned the site made a disc with everything on it, and was giving them out. The site doesn't work anymore, I'm not sure what happened, but if enough people are interested, I can make copies. It's too big for me to email. Would take forever with dialup.
Alright, heres what I'll do. Anyone who wants the disc, just email me and I'll give you my address. If you send me a self addressed and stamped envelope with a blank disc, I'll burn a copy and send it back to you.