What was the name of McDonald's original restaurant service system introduced in 1948?

McDonald's original restaurant service system introduced in 1948 was called the Speedee Service System.

Richard and Maurice McDonald developed the system at their San Bernardino, California, restaurant after reorganizing operations around a limited menu, standardized preparation, and rapid service. The approach was inspired partly by assembly-line production and was designed to serve customers more efficiently than a traditional carhop restaurant.

The system helped define the fast-food model later associated with McDonald's. Customers received a smaller selection of items prepared through repeatable procedures, allowing the restaurant to reduce waiting times and control costs.

The name also explains the early use of Speedee, the smiling chef mascot. Speedee represented the service promise directly, long before Ronald McDonald and the modern Golden Arches became the dominant public symbols.