The Antique Car Museum was investigated during the Phantom Racer case.
The Scooby-Doo Show
The junkyard watchman directed the gang to the antique car museum, which had recently been haunted by the Phantom Racer, so the gang decided to head there. Upon arrival, they found the door locked, so Shaggy Rogers and Scooby-Doo climbed through a window and unlocked the door. Inside, they split up to find the phantom. Scooby and Shaggy encountered the Phantom and were chased. They ended up trapped in an old automobile and pushed down a steep hill by the phantom. They managed to escape safely, and went onto reunite with the gang.