I regularly check
http://www.fast-autos.net/ and
http://www.km77.com/ as my new car resources. Of course Fast-Autos is more into "Fast" autos, while Km77 is a Spannish Site (and I'm sure most of you don't speak Spanish) that is more general (and it's recently more into getting you to pay for large pictures of cars. Anyways just thought I'd mention these two sites so that people might find them useful like I did (unless you people already nkow about'em).