KIA FORTE 2011,ACCELERATED ON ITS OWN,AND CAUSE ME TO HIT THE CAR IN FRONT OF ME,KEPT ACCELERATED,UNTIL I SHUT THE ENGINE OFF. WENT FROM 30 MPH TO 50 MPH,AND TOTALED MY CAR. I WAS IN MOTION ON A CITY STREET,WHEN THE INCIDENT OCCURRED. NO WARNING,NO ENGINE LIGHT,AND IT NEVER HAPPENED BEFORE.