Finally I found a method to quickly and easily model a car: keep it simple (duh). So here's the first vehicle model that I used that method on, a Getz 2005 stock edition. And it's my current car as well ^^ (well, technically mine is a full body-kit edition, which I might consider posting it later).
Excuse the crudeness, I did not even intend to put it up as a video in the first place. I'll make sure it's better and more organized next time. Enjoy. Completed in 4 hours, Dec 25, 2007.
Simple, renders well (the compressed video quality might not show it), and only takes 338Kb (this is the stock edition, the full body-kit took 901Kb). A stepping stone for future simple modeled 4 wheel vehicles in the future.