the first thing I thought of when I found this category? 3D modelling...
this was done in lightwave 3D, it'll never be finished but I'd thought I'd share.

http://i4.photobucket.com/albums/y140/turbo_junkie/porschetest.jpg

I've done a ferrari 360 as well but it is not hosted and I'm not on my home computer, I'll try to remember to post it up when I get home today

There is a CG section.

oops, sorry, and thanks for moving it