Toyo Tire Rubber Co., Ltd. announced that it has developed a new device that effectively reduces resonance in tire cavities, a source of interior noise, based on the new technology called 'Toyo Silent Technology' to solve the issue of sound that is transmitted from the tire to the interior of a vehicle. As hybrid vehicles become more popular, the mobility environment is becoming dramatically transformed as can be seen in the shift from the internal combustion engine that uses gasoline as a source of power for passenger vehicles, to motor drives.