Four-year-old Camden Muller sat on the grassy hill overlooking the Buck Miller Arena, yellow toy truck in hand. He rolled the truck in the grass and on his lap, picking it up to spin the big black ...

The three friends walked in a horizontal line toward their trucks, the light fading ever so slightly, like it was out of an old Western movie. It was almost showtime. And it was time for a showdown.

Each fall throughout the Great Plains, decades-old Chevrolet, GMC, Dodge, and Ford medium-duty trucks are awoken from months of slumber for the few weeks of harvest. Equipped with rear or side dump ...