Abstract: A unitary pedal apparatus for selectively accelerating and braking a motor vehicle in which depressing the pedal actuates the master cylinder for braking and subsequent lessening of pedal pressure effects acceleration, the apparatus including a switch within the pedal for placing the throttle at idle position and another switch in response to braking of the vehicle which places the throttle in the idle position, both switches when closed effecting energization of a solenoid located adjacent the throttle bar in the linkage arrangement, the linkage arrangement including a lost motion device which is expandable to prevent deformation of the linkage in response to hard braking.