Mobile dining is a unique culinary trend that has established its place in America's street food industry since the 17th century. The industry has attracted a great amount of attention over the years sparking an ongoing food truck revolution. Mobile food vending is widely distributed due to a variety of economic, technological and cultural factors. Workers engaged in the mobile food industry may be exposed to indoor air pollutants including carbon dioxide, carbon monoxide, hydrogen sulfide, sulfur dioxide, particulate matter and ultrafine particles. These potentially hazardous chemicals may pose short-term and long-term health risks to exposed employees.