I WAS STOPPED AT A STOP SIGN, WITH MY FOOT ON THE BRAKE PEDAL, THE ENGINE BEGAN TO ROAR. THE VEHICLE ACCLERATED FOWARD. I ATTEMPED TO STOP THE VEHICLE BY PRESSING THE BRAKE AS HARD AS I COULD. THE VAN WOULD NOT STOP. APPROXIMATELY 250 FEET FROM STOP SIGN, I HIT A TREE HEAD ON TO INSURE I DIDN'T INJURE ANYBODY. *JS