What was the name of McDonald's service system promoted by its original Speedee mascot?

McDonald’s original Speedee mascot promoted the Speedee Service System.

The system was developed by Richard and Maurice McDonald after they reorganized their San Bernardino restaurant in 1948. They reduced the menu, standardized preparation, used an assembly-line approach, and focused on serving customers quickly.

This operating model helped distinguish the restaurant from conventional drive-ins, where customers often waited for carhops and ordered a broader range of food. The McDonald brothers’ system became an important foundation for the modern fast-food format.

Speedee’s name reinforced the system’s central promise: speed. The branding later shifted toward the Golden Arches and Ronald McDonald, but the Speedee Service System remained an important part of McDonald’s origin story.