when i first modelled a car i used polygons, but the end result was abit poor. so i turned to nurbs... and it gave me really good results (lot of modelling time though!)
but for a car i prefer to work with Nurbs - mainly using a series of curves and working from there, that way you have the freedom of working with all the nurbs tools to create a really sharp model.
3D Modeler and Texture Painter (Learning)
"We have limits.... our imagination does not"
Final Year: University of Bradford (Worst place to live and study in the UK!!)