THIS ISSUE IS A SAFETY ENHANCEMENT REQUEST AFFECTING TOP OF THE LINE SUBARU OUTBACK 2016 LIMITED/PREMIUM MODELS EQUIPPED WITH KEYLESS IGNITION SYSTEMS. THIS ISSUE IS SIMILAR TO THAT REPORTED IN NHTSA ID NUMBER:10881286. ISSUE: IT IS POSSIBLE FOR A DRIVER TO INADVERTENTLY TURN OFF THE ENGINE (WE ARE ONLY HUMAN) USING THE START/STOP BUTTON WHEN THE VEHICLE IS IN DRIVE, PARK OR NEUTRAL. IF VEHICLE IS ON A SLOPE, THE VEHICLE WILL ROLL FORWARDS OR BACKWARDS ON IT'S OWN. THIS PRESENTS A SERIOUS RISK OF GRAVE BODILY HARM TO PEOPLE IN THE PATH OF THE UNATTENDED MOVING VEHICLE. THIS ALREADY HAPPENED WITH MY VEHICLE, LUCKILY IT HAPPENED INSIDE MY GARAGE ON A VERY SLIGHT SLOPE AND MY CLOSED GARAGE DOOR STOPPED THE VEHICLE. IF MY CHILDREN HAD BEEN BEHIND THE VEHICLE, REMOVING THEIR SCHOOL BAGS, THEY WOULD HAVE BEEN PINNED TO THE GARAGE DOOR BY A 3500 LB VEHICLE. UNACCEPTABLE. I REPAIRED THE SLIGHT DAMAGE BODY WORK ON THE VEHICLE AT THE DEALER BUT THAT IS IRRELEVANT COMPARED TO THE SAFETY RISK PRESENTED BY THIS "WORKS AS DESIGNED" BEHAVIOR OF THE CAR. POSSIBLE WORKAROUND: 1. SUBARU NEEDS TO CHANGE THIS BEHAVIOR AND ELIMINATE THE RISK BY AUTOMATICALLY ENGAGING THE ELECTRIC "PARK BRAKE" THAT IS ALREADY INSTALLED IN THIS MODEL VEHICLE, WHEN THE ENGINE IS TURNED OFF. 2. DISABLE ENGINE STOP UNTIL TRANSMISSION IS SET TO PARK. THE CURRENT AUDIBLE WARNING IS INSUFFICIENT. MY 15 YEAR OLD VEHICLE DID NOT ALLOW THE KEY TO BE REMOVED FROM THE IGNITION SLOT UNTIL PARK LEVER WA