The Grumman Lunar Logistics System Project 344 two-man rover design of January 1963 consisted of the basic vehicle, a manned module, and a tanker. This provided a range of 370 km on a 7 day traverse.

The modular rover was designed to be launched to the moon by three Saturn IB's (3 x 640 kg vehicles). This resulted in a large mobility weight penalty.

Crew Size: 2. Mass: 2,040 kg (4,490 lb). Electrical System: 1 kW fuel cell.