This moving walkway in the Montparnasse Metro station in Paris is over two football fields long. It hauls, and can deliver you to the end in less than two minutes. There is a warning sign at the beginning of the walkway saying no high heels, strollers, or children. They are building an even faster walkway to the left of this one. It looks as if it goes to infinite – and it seems like it when you are on it.