Sonic Drive-In is an American drive-in fast-food restaurant chain based in Oklahoma City, Oklahoma, complete with carhops who sometimes wear rollerskates. As of August 31, 2010, there were 3,500 restaurants in 43 U.S. states. Sonic serves approximately 3 million customers daily.
The long-running I-10 rivalry series between New Mexico State University (NM State) and the University of Texas - El Paso (UTEP) will bear the name of SONIC® ® America's Drive-In® for the second straight year. SONIC®, America's Drive-In® was announced as the title sponsor for the Battle of I-10 in 2010.