If you probably noticed I decided to remove the first car modeling tutorial because it was old and not so accurate.

From my knolidge that first tutorial was the first car modling tutorial that used splines into building the primary shape of the car (as seen in lotus). During that days there weren't many car modeling tutorials and I come up with a simple solution that could be used by beginers. I still use sometimes "the spline" approch into building the very basic setup of the cars, is a lot faster to draw lines than to cut through polygons.

But of course most of the heavy work is done with editable poly and subdivisions.