The Bartlett show to this day is still huge in Wisconsin Dells, I saw the Wisconsin registration numbers on the flivvers which kinda gave me the clue. Back in the mid 60s I was about 8or9 and I thought the coolest job in the world was a driver for the show. They came down wearing the shiny black satin Mercury jackets climbing into the hydrodynes with TWIN in lines! Even today...... it’s still pretty cool.