Abstract: A combination of a vehicle and a demountable body for transporting loads, the vehicle having a support which is movable between a horizontal position to support the body for transportation and an inclined position. The support carries an ended chain provided at one end with a hook for attachment to the body, and an endless chain provided with a pusher to engage the body, the chains being driven by a drive motor. The body has a guide arranged on lowering of the hook towards a lifting bar on the body, to guide the hook into engagement with the bar whereupon the hook is automatically releasably attached to the bar.