A transportation system in the Italian Alps that Madame Lefoux had a small part in designing. Looks like two large laundry lines strung parallel across the tops of pylons. A series of cabins similar to stage-coaches is perched atop the lines. These coaches move on large wheels with moving treads. Cabins can move over each other on these treads, as long as they don't have nets to carry cargo attached to their undercarriages.