Free vector sites

50+ files, that are not just great looking but also free to use in personal and commercial projects.
http://www.unstage.com/2010/02/50-free-vector-files/

http://www.freshfreestuff.net/vector/6000-free-car-vector-outlines.html

All the images on this site are free to use for personal use and most of them can be used commercialy.

Http://Www.Freevectors.Net/

Vecteezy is the place to share your free Vector Art and other vector-related resources. 

http://www.vecteezy.com/

http://vector4free.com/