Below is some of the desktop wallpaper and 3D wallpaper I have collected over the years. 

To download, simply right click, and select "save target as." Or, if you wish, click on the thumbnail, right click, and select "set as wallpaper."

If you like the 3D wallpapers, you might want to check out Planet 3D, 3D Crew, Digital Blasphemy, or Digital By Nature.

Also worth a look for good exotic car pictures, is Rapid Cars