How can I create a 3D model of a car in OpenGL

OpenGL is an API designed for displaying things (such as 3D models of cars) not creating them. To create a model of the car you'd want to use a 3D package such as 3D Studio Max or Maya though these have rather steep price tags. Blender is a decent free (and open source) alternative.

look into gluQuadrics first
they give you primitive shapes like, box, cylinder, sphere, etc
a bunch of those stuck together could make a simple car



edit
ok, why did my rating go down over this?
its perfectly reasonable advice
if your just starting out with opengl and graphics, start simple
working with primitives and how to translate and scale them is a much better way to start learning than writing a 3d format importer

[Edited by - haphazardlynamed on December 15, 2004 7:45:05 PM]