VEHICLE WAS PARKED INSIDE OF DRIVEWAY AND VEHICLE WASN'T RUNNING. LEFT VEHICLE FOR A FEW MINUTES, AND EMERGENCY BRAKES WERE ENGAGED. HE WAS A THE MAIL LOOKED UP, AND SAW VEHICLE COMING DOWN THE HILL. VEHICLE WAS TOTALED BECAUSE IT RAN INTO A TREE AND WAS SMASHED FROM BOTTOM TO TOP.*AK