I recently piloted the 2022 GMC Sierra AT4X around the Borrego Desert of California. A landscape that looks more akin to planet Tatooine than anywhere on this earth. Lacking a speeder, the GMC Sierra AT4X was able to power through the fine silt of a dried riverbed, cragged rocks that tested the mettle of the chassis, and articulated ruts that showed just how capable a truck with 32-inch tires can be. The truck also slithered itself around entrancing sandstone canyons, and trenches that were simply too small for a Ram TRX or a Ford F-150 Raptor to pass through without suffering damage. And it a…