Founded in 1953, SONIC Drive-in is one of the largest chains of drive-in restaurants in the United States. Based in Sardis, Miss., it has more than 3,500 drive-ins in 43 states coast to coast. The restaurant offers a range of products in various categories, such as burgers, coneys, chicken, snacks and sides, salads, kids meals, breakfast, Your Ultimate Drink Stop, premium roast coffees and Frozen Favorites. QSR Magazine has ranked SONIC at No. 10 in the magazine's Top 50 QSR list based on system wide sales (2010). SONIC Drive-in is a subsidiary of SONIC Corp.