Those little mini-trucks, we used them in Washington DC back in the early 90s. There is a dealer here in Fairbanks that sells them for off road use.
My partner has a diesel Dodge D-50, small truck, 4WD, holds two OK. Pulls a moderate load, his 18ft John boat with 65hp Evenrude, OK. The truck gets 37mpg pulling the boat, 43mpg by itself, on the open road. The problem is there is no get up and go, I drove it and refused to buy one back in the early 80s. mileage is good, but there is no real power. Seems to take forever to get it up to speed, and any little rise in the ground slows it down. Norm drives it back and forth to work, and when he goes somewhere by himself. No one else wants to ride in it. He gave his daughter one identical when she was in high school. She had a turbo put on it. A lot more get up and go, made a decent driving little truck. I drove it several times, and I almost traded trucks with her. Her little truck did not get the milage her Dad's did, but the additional HP was well worth it in my opinion.