What are some of Carl Karcher's ideas that should have remained on the drawing board?

Some of Carl Karcher's ideas that should have remained on the drawing board are Carl's Whistle Stops, where the employees were dressed as railway workers, "Hobo Burgers" were on the menu, and toy electric trains that took orders to the kitchen. Three were built in 1966 and later converted to Carl's Jr.'s. He also had a Scottish coffee shop chain that didn't work out.