Here's a video by the Springfield News-Leader about Louie's Drive-In (formerly Vaughn's Drive-In), which has served West Division Street in Springfield, Mo., since 1966: And this is the restaurant's specialty: One of the drive-in’s specialties is the Hillbilly Sandwich, a deep-fried beef tenderloin topped with the secret sauce. “That sandwich was floating around different places,” … Continue reading A visit to Louie’s Drive-In