If you're working with max, try to follow this evermotion tutorial. It's old, but a great start I guess and it gives a good point of view on car modeling. I modeled my first car from it.
http://www.evermotion.org/tutorials/sho ... g-tutorialBut if you want a more in depth tutorial, buy the Car4Ever DVD that's advertised at the bottem of that page. Or you can try .