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