For reasons I can't really explain, perhaps due to a fondness for all things rail, I've always thought motor vehicles adapted to run on rails are, well, cool.
This one is a Ford F350 with a utility box, spotted in Kemmerer.
"When the "caterpillar" crew go out to clear road of snow, they live right on the spot. T/5 Floyd R. Worendorff, Vendrick, Idaho, relaxes in his house on wheels. Truck is fitted with bunks and stove, and supplies living quarters for six men. 4 April, 1944. Camilatella, Italy."
Scary thing is, I've done the same thing, over 40 years later.