Perhaps a standard chassis, leaf springs, motors and wheels can be made on the Moon and pressurized bodies for personel, cargo hauling beds, or digging machinery can be mounted on them to produce a variety of vehicles or mobile machines.

Dirt roads will be made on the Moon by scrapers that get rid of the rocks for a smoother ride and so that vehicles don't take much of a beating.  The first vehicles will be landed on the Moon and have more sophisticated construction.  As lunar industry evolves, vehicles much more complex and robust than the Lunar Model T will be possible to build.  The Model T will just be good for short trips.  I see no problem with the chassis or motors, but better wheels and even traks would help.
David A. Dietzler, 2007