Check out the cool icons, illustrations, tutorials, and other works from Rokey, a Chinese graphic designer.

http://www.rokey.net
http://rokey.deviantart.com

MonsterMonster is an online magazine for photoshopped virtual cars. Check out the featured section to get a glimpse of the virtual car creations on this site. If you are a wizard with Photoshop, then you might want to check out some of the competitions. If you are looking to learn something, then check out their forum, and a beginners section is in the works.