She also worked as a carhop until roller skates were added to the uniform. In May 1999, the company began a new campaign featuring the character Katie the Carhop. Superdawg is a drive-in hot dog stand with carhop service. Orders were delivered by a carhop who attached a tray to the lowered window. The restaurant was originally a carhop drive-in, and only operated during the summer. On "Happy Days", she starred as Milwaukee carhop Marsha Simms in seasons 1-3 and 5. A carhop was the most prominent image on the poster for the film "American Graffiti".