Imagine a highly intelligent computer in your vehicle that is able to report on nearly every detail — from speed and idling to fuel use, low tire pressure, and more. This information can mean saving on maintenance costs by better monitoring vehicles or improving fuel efficiency by learning more about driving habits. All of this describes the universe of telematics, also known as GPS fleet tracking. To track assets, information from the vehicle is recorded via a small, telematics device — also called a black box — that plugs into the OBD II or CAN-BUS port. A SIM card and modem in the device enables communication on the cellular network.