Mauck Specialty Vehicles was created by Andy Mauck. It was a builder of custom bus-like vehicles headquartered in Worthington, Ohio, United States, near the headquarters of Worthington Industries, run by John McConnell, who provided the early financing to get the MSV off the ground. Mauck had previously sold custom firetrucks for a company called Sutphens. The formal vehicle name was the Mauck MSV 1120s, where the first "1" stood for the model number, the "12" stood for the wheelbase, and the "0" was intended to refer to option packages. The "s" had no meaning.