Four vehicles were considered for the development of the Roving Dentist Expedition Vehicle.
The Hummer was far too wide for narrow mush roads, and is quite heavy. The Mercedes Unimog was an extremely capable vehicle, but it still was on the heavy side, and was quite complex if you ran into mechanical trouble in the field. That left the Land Rover 101 forward control.
The Land rover 101 is quite narrow (72”), and had a fairly short wheelbase (101”). The Land Rover is capable of hauling 1ton in the bed and a 1ton trailer and is easy to service in the field. The total weight of the vehicle is 4200lbs, which is quite light for a military personnel carrier.