The brochure noted that the leading Voyager main engine candidate was a modified Apollo Lunar Module descent engine.

At the time, the Apollo Lunar modules weren't sure about the softness of the soil on the moon.

Apollo Lunar Module (LM) prime contractor Grumman suggested that LMs without legs or ascent engines serve as scientific instrument carriers and mini-laboratories.

In the images above, a pair of astronauts release the tightly folded LRV from a compartment built into the side of the Apollo Lunar Module.