Abstract: An in-vehicle mobile communication and routing apparatus for use with a taxi cab, public safety vehicle, delivery truck, fire truck, emergency vehicle, or any vehicle. Embodiments of the invention include a system incorporating the apparatus and a method for using the same. The mobile apparatus is attachable to a vehicle and includes a plurality of long-range transceivers communicatively coupled with one or more databases located remotely from the vehicle, and a plurality of short-range transceivers communicatively coupled with one or more devices external to the mobile apparatus and proximally located to the vehicle. An intelligent power supply is structured to monitor a battery condition of the vehicle and initiate a controlled shutdown of the mobile apparatus responsive to at least one of a timer countdown and a voltage threshold of a vehicle battery. Devices external to the mobile apparatus communicate with an in-vehicle processor and one or more remote databases.