What was the name of the McDonald's restaurant business founded by the McDonald brothers in 1940?

The McDonald brothers named their first restaurant McDonald's Bar-B-Q when it opened in San Bernardino, California, in 1940.

Maurice and Richard McDonald initially operated a drive-in barbecue restaurant with a large menu and carhop service. In 1948, they closed it temporarily, simplified the menu, and reopened with the Speedee Service System, concentrating on hamburgers, fries, and drinks.

The restaurant’s early name is sometimes confused with the later McDonald's brand. The famous Golden Arches and the modern fast-food identity came after the brothers redesigned their operation. Ray Kroc later expanded the business nationally under the McDonald's name, but the original 1940 enterprise was specifically called McDonald's Bar-B-Q.