Christina Bell Vaughn was promoted to president of Sonic Restaurants Inc. In her new role Vaughan will oversee operations, facilities, field marketing and risk management for all company-owned drive-in restaurants. She also will serve on the executive committee of the Sonic Franchisee Advisory Council.

Vaughan joined Sonic in 2002 in field marketing. After working on both the marketing and operations, Vaughan was appointed vice president of market strategies in 2012. She most recently served as president of franchise operations.