How has this thing not been used in an action movie? It’s the Bennie Railplane, a concept briefly tested in the 1930s near Glasgow. It never got funded and was never fully built. Here’s a good explanation at the Retronaut blog.

To submit a photo for the Art of Transit, post it to Metro’s Flickr group, email it to sourcemetro@gmail.com or Tweet it to @metrolosangeles with an #artoftransit hashtag. Many of the photos we’ve featured can be seen in these galleries on Flickr.