What was the initial concept behind Sonic Drive-In during its founding?

The initial concept behind Sonic Drive-In was to provide fast food service with the convenience of a drive-in experience. This innovative approach allowed customers to order food from their vehicles and have it delivered by carhops, combining the speed and efficiency of fast food with the enjoyable atmosphere of a drive-in. This model offered a unique dining experience that set Sonic apart from traditional fast-food restaurants, emphasizing quick service and customer satisfaction without the need for customers to leave their cars. The nature of this service aligns closely with the modern expectation of convenience in dining, which has continued to be a defining characteristic of Sonic Drive-In's business model.