The phrase "moon buggy" refers to a vehicle that was used by astronauts on the moon during the Apollo space missions. It was like a small car that allowed them to explore and move around on the lunar surface. Full definition
You control a constantly moving moon buggy and have two controls: jump and shoot. (toucharcade.com)
It's an ambitious simulator that tasks players with sending rockets into space, colonising planets, mining asteroids, and fooling around with moon buggies. (pcgamesn.com)
The red leather Bible sits on the control console of an Apollo moon buggy (see picture). (newscientist.com)