The luggage that you carry on your car will fit into the car's hatch or trunk. These parts are normally heavy. There are Mercury Mountaineer carbon fibre hatch and carbon fibre trunks which is weightless, as they are made of fibre glass (carbon fibre). The fitting of the Mercury Mountaineer trunk or hatch is done by the factory mounting points or latches. The Hatch or Trunk is used to cover the way of the cargo place. These parts are available with and without tail lamps.