Max Format:
Meshsmooth is applied so you can set the object resolution as you like. Just use the Named Selection Set meshsmooth to select the SubD objects.
Obj Format:
In 3 different resolutions ranging from 130661 to 843341 Polygons. Interior and exterior are saved separately so you can render the car also without the interior.The lowest poly-version is the SubD. hull. So you can use it easily as SubD in Maya/XSI or any Programms supporting SubD.
3ds Format:
In 3 different resolutions ranging from 255608 to 1682097 Polygons. Interior and exterior are saved separately so you can render the car also without the interior.