FCM 2. In addition to wire trains, most electric railroads operated smaller self-propelled cars for daily inspection and maintenance of the overhead wire. This railbus answers the call on the Ferrocarril Mexicano [Mexican Railroad]. Like most line cars, ladders, tools and supplies are hung on wherever convenient, producing this decidedly cluttered look. Taken at Orizaba, Vera Cruz, on February 13, 1961, by F. H. Worsfold.