A "Wienermobile" is an automobile shaped like a hot dog on a bun that is used to promote and advertise Oscar Mayer products. It was invented in 1936 by Oscar's nephew, Carl G. Mayer.

Oscar Mayer & Co. embraced new vehicles to advertise their product quite literally with the introduction of Oscar Mayer's trademark Wienermobile. The distinctive vehicles were very popular and are still used by Oscar Mayer today. The drivers of the Wienermobile, called "Hotdoggers," learn to drive this famous vehicle at Hot Dog High in Madison, Wisconsin. Then, it's off to tour the country and hand out Wienerwhistles, toy replicas of the Wienermobile that doubled as a whistle.

The Wienermobile has been a wild success, proving to be a unique means advertising and marketing. In 2004, Oscar Mayer announced a contest whereby customers could win US $5,000 and the right to use the Wienermobile for a day. Within a month, the contest had generated over 15,000 entries.