ON 4/3/21 AT APPROXIMATELY 1:30 PM, THE 2013 SUBARU FORRESTER WAS SLOWLY BACKED OUT OF THE GARAGE, GEAR WAS IN REVERSE, FOOT ON ACCELERATOR WITH SPEED OF <1 MPH; JUST ENOUGH MOMENTUM TO GET CAR OUT OF GARAGE, DOWN DRIVEWAY AND ONTO THE STREET. WHILE STILL IN REVERSE, THE CAR WAS POSITIONED ONTO THE STREET TO DRIVE FORWARD IN AN EASTWARD DIRECTION. BEFORE THE GEARSHIFT COULD BE MOVED FROM REVERSE TO DRIVE (FOOT WAS NOT ON ACCELERATOR AT THE TIME), THE CAR UNEXPECTEDLY SURGED BACKWARDS ACROSS THE STREET WENT UP AN EMBANKMENT CUTTING INTO NEIGHBOR'S YARD AND HIT A PARKED CAR IN THE NEIGHBOR'S DRIVEWAY AND STOPPED. THE FLOORMAT ON DRIVER'S SIDE LAY FLUSH/FLAT AGAINST THE FLOOR, THERE WAS NO OBSTRUCTION BY THE FLOORMAT OR ANY OBJECT TO THE GAS OR BRAKE PEDAL. DRIVER HAD SEATBELT ON AND SUSTAINED MINOR INJURIES (BUMP ON HEAD AND ELBOW, ABRASION FROM SEATBELT, AND BACK PAIN) DUE TO HITTING PARKED CAR. SUBARU HAD TO BE TOWED ON A FLATBED TRUCK. IT LOOKED LIKE THE AXEL WAS BROKEN, RIGHT FRONT TIRE AND LEFT REAR TIRE WERE MISALIGNED, AND DAMAGE TO REAR BUMPER. SEE PHOTOS