A moonbus is a hypothetical small, light-duty VTOL (vertical take-off and landing) spacecraft designed primarily for short-range low-altitude point-to-point ferrying of people and supplies on a moon. A moonbus “flies” over terrain by regulating downward thrusters to counter the moon’s gravity while using horizontal thrusters or angling downward thrust to move over the moon’s surface. While plausible, this seems to be more trouble than it would be worth in actual practice.