[Solved] Already known for its slogan “Service with the Speed of Sound,” what did the burger chain Top Hat change its name to in 1959?

The Quiz: Already known for its slogan “Service with the Speed of Sound,” what did the burger chain Top Hat change its name to in 1959?

Burger King
White Castle
Sonic Drive-In
Jack in the Box

The correct answer to this quiz is Sonic Drive-In.