Thanks, Ddey. The car in front of it is what I wanted but I'm fascinated to know that a Volvo found its way to Mayberry.

Interesting note about the bus: the exact same bus is seen in the very next episode taking the Taylors on a tour of Hollywood/LA. When they return from their multi-episode trip, they're on the Brill bus already seen on the show's Imcdb page.