What service system did the McDonald brothers introduce after redesigning their restaurant in 1948?

The McDonald brothers introduced the Speedee Service System after redesigning their restaurant in 1948.

The system focused on a small menu, standardized preparation, assembly-line production, and rapid counter service. Instead of operating mainly as a drive-in with carhops, the San Bernardino restaurant emphasized speed and consistency.

Its name came from Speedee, a chef character used as an early McDonald's mascot. Speedee appeared before Ronald McDonald and before the golden arches became the company's dominant visual symbol.

The system became a foundation of modern fast-food franchising. Although McDonald's later changed its restaurant designs, advertising, and characters, the basic promise of predictable food delivered quickly remained central to its identity.