I grew up in the 50's. We used to build strip downs to use on the farm.. I could haul about 25 bales of hay on an old Dodge "truck". I broke a piston, so I took it out and ran it as a 5 cylinder. Had to coast it to start it though.
I would have to say that this is most definitely the remnants of a woody wagon since all the side panels are gone and that top header of the windshield mimics that of a woody wagon. Very rare!