A commercial truck has a cab, a flatbed, and provides a space between the cab and flatbed, wherein an auxiliary fuel tank is mounted on a frame of the truck. A sleeper unit is positioned on, and supported by, the auxiliary fuel tank, the sleeper unit adapted for being accessed directly from the cab. A picker crane is mounted on the frame of the truck behind the auxiliary fuel tank and the sleeper unit and within the space between the cab and the flatbed.