http://gfx-3d-model.blogspot.com/ I ran into this website a couple weeks ago and I don't know how many people know about it. There are a lot of sweet car models, and character models. I think a lot of them are ripped straight out of some games (Counter strike characters, Halo M.Chief). Check it out.

Yeah... There's some obvious copyright issues here. While the car models are impressive, if there are character models from other games (Halo, resident evil) for which the website doesn't own copyrights, then its possible that the car models and other models are also copyrighted. If someone was to use these models and release a game which contains them, they could be facing a lawsuit of copyright infringement. An appeal to ignorance wouldn't stand in court. It's better to be safe than sorry and make your own models.

I strictly posted it for the guys that just want to show off cool graphics demos. I don't think anyone is stupid enough to put Master Chief in a game. A lot of the IOTD's use Doom3 models and Crysis models.