A miniature motor includes: a plurality of magnets serving as stator poles and attached to an inner surface of a motor casing having a closed-bottomed cylindrical shape; a salient-pole rotor having a core mounted on a rotor shaft and windings placed on the core; and a commutator mounted on the rotor shaft. An operational point for an internal combustion engine and an electric motor of the vehicle is determined which makes the amount of charge into a battery smaller, the greater is this efficiency indication, based upon the detected vehicle speed, and the drivebrake power command value and the efficiency indication. Each subunit is assigned one of a plurality of differing levels of significance. The method may further include correlating the performance data and the service information and determining a violation of the at least one rule by the data network based on the collected performance data and the at least one rule. In one embodiment, a decoder memory unit and a system memory unit are employed together with the local memory to store a codeword look-up table.