Another interesting site is
www.cgtalk.com
It's a bit like conceptart.org but more for the professional CGI artists.
And indeed, me too i can't say enough about Feng Zhu, he's kicking major butt with his drawings. For me he's one of the best designers in the world.
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My baby: 320d E46 with sport package
the thrill of speed is not always a good thing, think about it