Has anyone seen the 1967 Marty Robbins' movie: "Hell on Wheels" on YouTube? It has some good shots of a '66 all red Superior Cadillac Royale straight ambulance and a '66 low top black/white combo (?). They are portrayed as funeral home run cars as the driver and attendant have on suit and ties. Also, the cot has a name plate but I couldn't make out the name. The movie was filmed at the Nashville, Tn, Fairgrounds Speedway, so probably used local funeral home for the on track shots. Someone from the Nashville area might remember who it was.