The Mercury Cougar carbon fibre hatch and the carbon fibre trunk are much lighter in weight, since they are made up of using the things like fibre glass and other materials which are harder and lighter. The trunk hatch of a car is usually available with or without tail lights. It is normally heavy. Because of the heaviness of the trunk hatch, several drivers go for a much lighter weight trunk which is made from fiberglass or carbon fiber than choosing the factory trunk hatch. Mercury Cougar carbon fibre hatch is a tool mostly used for the looks as well as for convenience of driving.