What was McDonald's first restaurant-service system called, the name represented by its early mascot Speedee?

McDonald’s first restaurant-service system represented by its early mascot Speedee was called the Speedee Service System.

Richard and Maurice McDonald developed the system after reorganizing their San Bernardino restaurant around a limited menu and highly standardized food preparation. Instead of treating each order as a separate customized meal, workers performed specialized steps in an assembly-line arrangement.

The approach reduced waiting time and helped the restaurant serve consistent portions at a lower price. It became a model for the fast-food format later associated with McDonald’s worldwide expansion.

The system’s name is sometimes confused with the restaurant’s early “Speedee” mascot. Speedee was the visual representative; the Speedee Service System was the operating method itself. That distinction explains why both names appear in accounts of McDonald’s early branding.