The invention relates to {TAIL ~ an actuator device} for a motor vehicle speed responsive system, the device being operable to actuate the throttle valve or the like of the internal combustion engine of {HEAD ~ the vehicle} 
The invention relates to { TAIL ~ an actuator device } for a motor vehicle speed responsive system , the device being operable to actuate the throttle valve or the like of the internal combustion engine of { HEAD ~ the vehicle }
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