VEHICLE ROLLAWAY, ENGINE ON. RE: ODI PE15-30 AND EA 16-002. I EXITED MY VEHICLE WITH THE ENGINE RUNNING AND THE TRANSMISSION WAS NOT IN PARK. THE VEHICLE HILL START ASSIST GAVE ME ENOUGH TIME TO EXIT THE VEHICLE AND THEN IT BEGAN TO ROLL BACKWARD. THE OPEN DRIVER'S SIDE DOOR KNOCKED ME DOWN AND DRAGGED ME 50 FEET. MY RIGHT LEG AND FOOT WENT UNDER THE LEFT FRONT WHEEL WHICH PULLED ME OUT FROM UNDER THE OPEN DOOR. THE VEHICLE CONTINUED ROLLING BACKWARD OVER AN EMBANKMENT AND CRASHED ON THE ROAD BELOW. THE VEHICLE WAS A TOTAL LOSS AND I SUSTAINED A SEVERE SPRAIN TO MY RIGHT FOOT. I HAVE PICTURES AND AN INSURANCE CLAIM REPORT TO PROVIDE PROOF OF THIS INCIDENT.