SONIC®, America's Drive-In (NASDAQ: SONC) is the nation's largest chain of drive-in restaurants.
SONIC started as a hamburger and root beer stand in 1953 in Shawnee, Okla., called Top Hat Drive-In, and then changed its name to SONIC in 1959.
The first drive-in to adopt the SONIC name is still serving customers in Stillwater, Okla.
More than a million customers eat at SONIC every day.
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