Don't start with a box...just start with a flat surface.
Can we see a wireframe pic?
Model with polys if you plan on putting your cars in-game...nurbs 'n splines tend to produce extremely high-poly models, where in games you'd like to keep as low a polycount as possible.
Scott:Okay, Houston. As I stand out here in the wonders of the unknown at Hadley, I sort of realize there's a fundamental truth to our nature. Man
must explore.