Art car recent years the festival has been forced to limit the number of vehicles on the playa. As such they have restricted the vehicles that are licensed to what they are now calling "mutant vehicles". There has been some confusion within the Burning Man and Art Car communities over these two terms, with some believing the terms are simply synonyms. According to art car artist and Art Car Fest organizer Philo Northrup, art cars are "street-legal vehicles that have been permanently transformed into mobile sculptures". According to the Burning Man DMV ("Department of Mutant Vehicles"), Mutant Vehicles are "'art on wheels':
Art and World War II spirit” of the German people in art. This officially sanctioned art was conservative and figurative, heavily inspired by Greco-Roman art. It was often grandiose and sentimental. In terms of contents, this art should represent and convey the regime's ideals. In 1937 in Munich, two simultaneous events demonstrated the Nazis’ views about art. One exhibition displayed art that should be eliminated (“The Degenerate Art Exhibition”), while the other promoted, by contrast, the official aesthetic (“The Great German Art Exhibition”). In Europe, other totalitarian regimes adopted a similar stance on art and encouraged or imposed an official aesthetic, which was a form