Industrial objets/toys for Christmas

Saw these trucks at Motorland in Arundel, Maine a while back. They mostly seem to have price tags so I guess the are for sale. I like that Ford COE dump truck. Also the red truck, eighth down, which looks like a Chevy COE as a Saskatchewan grainer. What is it that's so appealing? Just the lay of light on these simple forms through the rainy window? The Arts & Crafts movement of the late-19th c. could not have predicted that, a century later,  industrial products would speak to us with such hammered simplicity.