I WAS DROPPING MY SON OFF AT HIS FRIEND'S HOUSE. I PULLED INTO THE DRIVEWAY AND PUT THE TRUCK IN PARK. I OPENED MY DOOR, GOT OUT, WALKED AROUND THE FRONT OF MY VEHICLE AND ACCOMPANIED MY SON UP TO THE FRONT DOOR. ALL OF A SUDDEN, THE TRUCK STARTED TO ROLL FORWARD ON THE DRIVEWAY AND CRASH INTO THE HOMEOWNERS FENCE. WHEN I GOT INTO THE TRUCK, IT WAS STILL IN PARK. THERE WAS DAMAGE TO MY FRONT BUMPER AS WELL AS THE FENCE THAT IT CRASHED INTO. THANK GOD IT DIDN'T HAPPEN WHILE I WAS WALKING IN FRONT OF IT! THIS TRANSMISSION ON THIS VEHICLE HAS BEEN A PROBLEM SINCE THE BEGINNING. I TOO EXPERIENCED THE "THUMP" AS IT SLAMMED INTO REVERSE, ONLY FOR FORD TO DENY THERE WAS A PROBLEM AND FINALLY PUT THE ADDITIVE INTO THE TRANNY. WHAT A WAY TO FIX THE PROBLEM! ...NEVER AGAIN WILL I BUY A FORD. I JUST HOPE NO ONE HAS TO LOSE THEIR LIFE FOR FORD TO DO SOMETHING ABOUT THIS. *TR