The structural panels never happened. That idea was shitcanned when they dropped the exoskeleton design for a unibody. Now the extra heavy panels are a stupid vestige of a design that never came to fruition. The truck is a damned unibody auto structure, hardly worthy of being called a truck, much closer to a Hyundai Santa Fe than a Ford F-150 and worse for having to carry all those heavy bolt on panels that do absolutely nothing for the truck functionality of the vehicle.