VEHICLE WAS PARKED/STATIONARY ON SEMI-FLAT A SCHOOL PARKING LOT. WHEN I LOOKED BACK THE VEHICLES MOVED. SEEMS THE PARKING GEAR DID NOT FULLY ENGAGED. REGARDLESS VEHICLE WAS NOT IN NEUTRAL OR DRIVE AND IT STILL MOVED FORWARD WITH NO ONE ON IT, NO KEYS INSIDE AND ENGINE OFF. VEHICLE HIT ANOTHER PARKED VEHICLE. LUCKILY NO ONE GOT HURT. SEEMS THAT THE TRANSMISSION/CVT SYSTEM MAY BE AT FAULT, BUT UNKNOWN AT THIS TIME.