I WAS INSIDE THE VEHICLE AT THE BACK SEAT, VEHICLE WAS STATIONARY ON PARK, AND FOOT BREAK WAS ON. I WAS ON MY SISTER IN LAWS DRIVEWAY WHICH IS SLIGHTLY INCLINED, I WAS WAITING FOR MY HUSBAND WHO WENT INSIDE THE HOUSE, HOWEVER I DECIDED TO FOLLOW HIM. I WENT OUT OF THE VEHICLE, AND WENT TO OPEN THE DRIVER'S SIDE DOOR TO REACH THE KEY AND TURN OFF THE VEHICLE; UNFORTUNATELY, WHEN I TURNED OFF THE ENGINE, THE VEHICLE STARTS ROLLING, I WAS KNOCKED DOWN BY THE OPENED DOOR AND FELL ON THE DRIVEWAY, WITH MY LEFT LEG/ MORE ON THE ANKLE AREA WAS RUN OVER BY THE FRONT WHEEL. THESE RESULTED WITH SEVERE BRUISE ON MY ANKLE, AND HUGE BUMP ON MY HEAD. THERE WAS NO WITNESS, HOWEVER THERE WAS A CAR THAT PASSED AND I I ASKED FOR HELP, THE DRIVER CALLED BY HUSBAND WHO IS INSIDE THE HOUSE, ALSO A NEIGHBOR CAME TO HELP AND CALLED 911. BY HUSBAND LOOKED INSIDE THE VEHICLE WHICH SLIDE TOWARDS THE FRONT NEIGHBORS DRIVEWAY, THE VEHICLE STOPPED, STILL ON "P" MODE AND FOOT BREAK IS STILL ON. THE VEHICLE ON P AND FOOT BREAK ON SHOULD NOT MOVE OR ROLL.