Galileo Mobility Instruments developed a system of movement for all terrains. The resulting products range from wheelchairs to farm and construction vehicles to military and rescue robots. It only takes an instant to switch from wheel to track mode, and back again. The way the Galileo Wheel moves from one mode to the other will impress you, or even make you laugh!
Of course, the above is even better when you play Yakety Sax behind it.