The semi-truck with the logo on the side.
Mac Macs is a company that distributes hamburgers. A delivery truck baring the name and logo is seen in Dragon Ball GT: A Hero's Legacy when an Unnamed truck driver offers Goku Jr. a ride, only to steal the young boy's food when he leaves the truck for a toilet stop.
Trivia
- The name Mac Macs may be taken from the name of the popular McDonald's sandwich, the Big Mac.