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The Yamaha ULTIMATE TERRAIN VEHICLE (UTV).
Originally designed for early Martian exploration, instead of being scrapped after the dismantling of Nasa and various other space programs Yamaha decided to overhaul the design for Earth use, and thus the popular UTV was born. Designed for extended use on a hostile barren wasteland thousands of miles from easy repair, the UTV proves itself exceptionally effective in many of earth's terrain features. With its easy maintenance and sheer durability and versatility, it has in recent years been taken up by many cross country racers and adapted for such. Upgrades seen above include modified hull manipulators to allow it to physically clear obstacles, extra fuel canisters, and external supply packs for the pilot. Internally, many choose to modify the engine for increased speed or fuel economy, and upgrade the shock distribution system in the legs to allow for larger falls.
It should be noted that the legs can stand vertically to increase the unit's maneuverability over difficult terrain, and that as a feature of the orignal design, the unit remains hermetically sealed and NBC protected, and thus can enter regions where due to certain factors like radiation, air quality, or altitude, other vehicles would not normally be able to travel. For this same reason, the UTV also see's a lot of Military, scientific and Humanitarian usage.