The contact owns a 2021 Subaru Forester. The contact stated while parking the vehicle in a parking lot, the vehicle accelerated independently and jumped the curb and into the bushes. The contact attempted to reverse the vehicle but continued to also accelerate independently in Reverse. The contact stated the gear shift was on Neutral and continue to Rev loudly. The contact stated the vehicle stop on its own due to the tires deflating. The contact stated no one was injured nor sought medical attention. A police report was not filed. The vehicle was not drivable. The contact towed to the local dealer but was unable to duplicate nor diagnosed the failure. The manufacturer had been informed of the failure. The failure mileage was unknown.