The term 'moon buggy' refers to the Lunar Roving Vehicle (LRV) used by astronauts during the Apollo 15, 16, and 17 missions to explore the moon's surface. The LRV was also known as the Lunar Excursion Module (LEM), which is a three-letter acronym for the vehicle. The LRV was designed to be lightweight and durable, and it allowed astronauts to explore the moon's surface with greater ease than ever before.