SEAT CONTROL ADJUSTER ENGAGED SPONTANEOUSLY AND MOVED COMPLETELY FORWARD WHILE THE VEHICLE (1992 MERCEDES BENZ, 500 SL) WAS TRAVELLING AT 65 MPH ON BELTWAY EN ROUTE TO BWI, PINNING MY WIFE AGAINST STEERING WHEEL, ANFD FORCING HER TO DRIVE ONTO THE FAST LANE SHOULDER. *AK