I am a graphic designer that just recently got into car renderings. I am willing to do them for people at a small cost just to get my name out there.
Here are some samples of my work:

the titan for US AMPS/RE AUDIO
www.usamps.com
Personally, I think that all of these need some more work. Some of the ellipses are off and the shines are a bit odd, but this is what I have so far.
Each one of these was done in about 2 days.
Please feel free to critique.