Clutch disengagement shock resulting from the sudden release of torsional torque is prevented and ride-feeling at the time of changing gears or starting at a low-speed gear stage in an automatic clutch vehicle is improved. Each band pass filter includes an inductor and a variable capacitor forming an LC resonator where the inductor is an integrated planar spiral inductor. In other instances, certain systems utilize GPS or RFID information to identify andor recommend which of a plurality of tasks should be completed by one or more remote users responsible for completing the tasks.