This is my latest piece I modeled for fun. Base modeled in Maya with polygons, converted to Sub-Ds for detailing, then converted back to Polys for rendering in Mental Ray.
I want to say the windows should be a TAD more reflective, mainly the top one (green car) because they have such a pure black, the red car's windows look more accurate. Just something minor I noticed. Depends on the environment and lighting I guess.