dually
n.— «The ability to see over other traffic is a big plus, and the width of the cab assures the driver doesn’t snag the rear tires or even the bodywork in a close maneuver—commonly a problem with big dually pickups.» —“Exclusive: We drive the tough-duty pickup” by Steve Sturgess Construction Equipment Aug. 1, 1996. (source: Double-Tongued Dictionary)