I've gathered all the pictures of cars I've taken on my fancy dancy potato and shall now dump them all. Contains Enzo, F40, Racevan Odyssey, a F&F Supra with a babyseat, and other not as cool stuff.
I'll save those ones for last though.
Disclaimer: If you're expecting wallpaper quality it'll probably only be good for a small tablet or phone. This mainly just me making myself feel better after seeing the list of amazing cars at this Cars and Coffee.