A requesting message processor identifies client security input data of a first format and encapsulates the client security input data within a client security token. The transience register hosts an indication of transient for data stream prefetching. A length of flexible tubing is operatively engaged by the peristaltic pump, and includes a first end arranged in flow communication with the fluid reservoir and an accessible second end. A target value for decreasing the engine output is suitably set depending upon the vehicle operating conditions, and a sudden increase in the rotational speed is prevented in all gears while relaxing the shock of gear-change caused by a sharp change in the acceleration.