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':
Form and document creation and procedures in place to limit transmission of information between the institution and external Internet Web sites". This example shows where technology itself can interfere with the effectiveness of a form. Also, institutional requirements can limit the design being created by a technical writer. Sometimes, there are external restrictions on a form or document that could affect the design process. Rita Tomlin, a freelance writer and instructor at San Diego State University, investigates the implications of the Food and Drug Administration (FDA) regulations on medical writing. Tomlin says, "An essential task for the medical writer is to tailor data presentation