WHILE ENTERING THE VEHICLE MY 3 YEAR OLD DAUGHTER SLIPED INTO THE FRONT DRIVERS SEAT, I HAD OPENED THE SIDE DOOR TO PUT HER IN HER CAR SEAT AND IN A MATTER OF SECONDS SHE SLIPPED INTO THE OPENED FRONT DOOR WHERE I HAD JUST TURNED ON THE AC TO COOL THE VEHICLE OFF. WHEN I WENT TO TAKE HER OUT OF THE SEAT SHE GRADED THE GEAR SHIFT AND WITH ME HOLDING ONTO HER AND THE STEERING WHEEL I WAS DRAGGED BY THE MOVING VEHICLE UNTIL WE RESTED UPON THE FENCE THAT SURROUNDS MY SIDE/REAR YARD. SHE WAS NOT INJURED BUT I STRAINED MY BACK BUT DID NOT RECEIVE MEDICAL ATTENTION. I WAS UNAWARE OF THE ABILITY OF THE VEHICLE TO MOVE SO EASILY AND WAS WITHIN ARMS REACH THE ENTIRE TIME. I HAVE REPORTED THE INCIDENT TO THE INSURANCE COMPANY BUT NO POLICE WERE INVOLVED.