[excerpt from, ( http://www.burningman.com/on_the_playa/playa_vehicles/dmv.html )]
“What is a Mutant Vehicle?
A Mutant Vehicle is a unique, motorized creation that shows little or no resemblance to their original form, or to any standard street vehicle. Mutant Vehicles are radically, stunningly, (usually) permanently, and safely modified from their base vehicle. Sometimes the whole vehicle is made from scratch.
Mutant Vehicles may include such non-standard motorized forms such as furniture, other non-street vehicles such as a boat or train, animals, or just about anything imagininable. For safety reasons, they must not mimic any type of emergency service or law enforcement vehicle.
Vehicles merely stripped to the frame and engine, and vehicles with minimal changes or temporary decorations are not considered Mutant Vehicles.
Examples of Mutant Vehicles can be found in the Burning Man Image Gallery.”
How are Mutant Vehicles different from any art car?
A Mutant Vehicle is, in essence, a specific variety of art car. A Mutant Vehicle is an art car classification specifically created for use at Black Rock City. The classification was created because the term “art car” can have a broad definition, and, because of the limit on the number of vehicles the DMV can license, the DMV did not want to deem whether or not someone’s creation was “art”.
Mutant Vehicles are integral to the culture and community at Burning Man. They contribute to the surreal, visual quality that binds Black Rock City together.”