VEHICLE ACCELERATED OF ITS OWN ACCORD DRIVING STRAIGHT ON HIGHWAY. TOOK TO DEALER (VILLAGE FORD, OCALA, FL), THEY RAN BLACK BOX AND DID WARRANTY WORK. A FEW WEEKS LATER, VEHICLE ACCELERATED AGAIN OF ITS OWN ACCORD WHILE ATTEMPTING TO SLOW DOWN TO MAKE A LEFT TURN. VEHICLE COLLIDED INTO A TREE.