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':
Anaglyph 3D than regular images, allowing users to see the streets in 3D. Disney Studios released "" in August 2008, its first anaglyph 3D Blu-ray Disc. This was shown on the Disney Channel with red-cyan paper glasses in July 2008. However, on Blu-ray Disc anaglyph techniques have more recently been supplanted by the Blu-ray 3D format, which uses Multiview Video Coding (MVC) to encode full stereoscopic images. Though Blu-ray 3D does not require a specific display method, and some Blu-ray 3D software players (such as Arcsoft TotalMedia Theatre) are capable of anaglyphic playback, most Blu-ray 3D players are connected via HDMI 1.4