1. A TRANSPORTING DEVICE ADAPTED TO CARRY A PLURALITY OF VEHICLES THEREON COMPRISING IN COMBINATION, A RAILWAY CAR HAVING A LONGITUDINALLY ELONGATED AND LATERALLY EXTENDING FRAME, A PLURALITY OF ALIGNED LONGITUDINALLY AND LATERALLY EXTENDING STRUCTURAL SECTIONS BEING SUPERIMPOSED RELATIVE TO SAID FRAME AND SPACED VERTICALLY ABOUT THE SAME, EACH OF SAID STRUCTURAL SECTIONS COMPRISING A PLURALITY OF LATERALLY AND LONGITUDINALLY SPACED VERTICALLY EXTENDING SIDE POSTS AND LONGITUDINALLY AND LATERALLY EXTENDING VEHICLE SUPPORTING DECK MEANS INTERCONNECTING SAID SIDE POSTS, A MOUNTING MEANS CARRIED BY THE LOWER END OF EACH OF SAID SIDE POSTS AND HAVING A LOWER FACE EXTENDING IN A SUBSTANTIALLY HORIZONTAL PLANE, EACH STRUCTURAL SECTION OF SAID PLURALITY OF STRUCTURAL SECTIONS HAVING A SIDE POST IN JUXTAPOSED PAIRED RELATIONSHIP WITH A SIDE POST OF THE ADJACENT STRUCTURAL SECTIONS, A PLURALITY OF MOUNTING MEANS CARRIED BY SAID FRAME WITH ONE MOUNTING MEANS OF SAID PLURALITY OF MOUNTING MEANS HAVING AN UPPER FACE DISPOSED IN PARALLEL VERTICALLY SPACED COOPERATING RELATIONSHIP WITH THE LOWER FACE OF THE MOUNTING MEANS OF EACH OF SAID JUXTAPOSED PAIRED SIDE POSTS AND ONE MOUNTING MEANS OF SAID PLURALITY OF MOUNTING MEANS DISPOSED IN PARALLEL VERTICAL SPACED COOPERATING RELA-