Sonic Drive-In

Sonic Corporation (operating name: Sonic Drive-In) is an American fast-food restaurant chain based in Oklahoma City, Oklahoma, that creates the drive-in diner feel of the 1950s, complete with carhops who often wear roller skates. There were 3,290 restaurants in 34 states, plus one in Mexico, as of May 31, 2007.
See more at Wikipedia.org...