Looks good! I especially like the closeup of the girl (the last one) that looks kinda futuristic-like.
For the car, it looks good, but not really R/C-like. I will try and find a better example of how the ones we race look. Most of them use a Dodge Stratus shell (or something similar). Since the body is a uniformly thick piece of lexan (plastic), they do not have too many distinguishing features on them, other than the decals/graphics.
However, what could be exceptionally cool (and I'm not sure how this would or could work) would be a 3D model of the inside as well as the outside, and then combining the two for a cutaway-type view.
Just thinking on my feet here. Sorry for not getting back to you sooner, I was plagued by the routing problems here, this is the first time I've seen vbulletin.org in a while!