The all-aluminum body and bed are based on the designs of 1930-31 Ford Model A trucks. The suspension ... constructed the "Dually Hauler" for Joe Kral of Columbia Heights, MN.

No, it's not some kind of mysterious truck tank -- you've just stood in the shadow of a heavy-duty dually truck. A dually, or a dual rear-wheel truck (DRW) if you prefer the official nomenclature ...