WAS GOING THROUGH A DRIVE THROUGH CARWASH, AUTO IN NEUTRAL. REACHED THE END, PUT FOOT ON BRAKE, PUT AUTO INTO DRIVE. THE VEHICLE ACCELERATED ON IT'S OWN, GOING STRAIGHT OUT OF THE END OF THE CARWASH. HAD THE BRAKES ON BUT THEY DIDN'T STOP THE VEHICLE. TURNED THE CAR TO MISS A TELEPHONE POLE AND WENT OUT INTO 4-LANE HWY., CRASHING INTO ANOTHER VEHICLE, STOPPING MY VEHICLE FINALLY. VEHICLE WOULD NOT STOP AT ALL. THE VEHICLE WAS TOWED TO OUR INS. CO. REPAIR/ESTIMATE SHOP. DO NOT HAVE A CAUSE FOR THE PROBLEM AS YET, STILL UNDER INVESTIGATION. *TR