Cadillac STS Trunk is also called as hatch which provides good support when you have to load suitcase and luggage in the car. It is a great help when you have to reach the cargo - space. These are made with or without tail-lights. These are very heavy. Cadillac STS Carbon fibre trunks and Cadillac STS carbon fibre hatches are very light weight compared to normal trunk as these are made of carbon fibre or fibreglass. The Cadillac STS trunks can be set with the help of factory-mounting points and latches. It is basically used to give a unique look and convenience.