Since 1936, the Wienermobile has graced the roadways of the world, advertising Oscar Mayer's meat products and occasionally taking kids to the prom. The first design had a 13-foot hot dog and could be seen on the streets of Chicago.
Carl G. Mayer personally patented the modern version of the vehicle. You can view the official paperwork here.
(Photo: Jeremy Noble)
-via Blazenfluff