The contact owns a 2018 Subaru Forester. The contact stated she was parking in a parking space when the vehicle accelerated at a very high speed without any warning causing the driver to crash into a building. When the vehicle came to a complete stop, the contact shifted the vehicle into reversed and the vehicle accelerated backward at very high-speed once again causing the contact to hit another building. The contact was the only person that was injured. The contact was uncertain if a police report was filed. The vehicle was towed to a collision center. The dealer and the manufacturer were not contacted. The failure mileage was 4,000.