There is a reason federal law caps a commercial truck's gross vehicle weight at 80,000 pounds. Every component of that vehicle, the brakes, the tires, the suspension, the frame, the coupling devices, is engineered to perform within specific weight tolerances. When a truck exceeds those limits or carries cargo that shifts during transit, the physics change in ways the driver cannot control. Stopping distances increase. Tires blow out under excess load. Trailers swing wide on turns. And when something goes wrong at 65 miles per hour[...]