The contact's friend owned a 2007 Subaru Forester. The contact stated that while reversing in the driveway, the vehicle suddenly violently accelerated and crashed into the retaining wall and unit across the street. The vehicle was then shifted into drive from reverse when the vehicle violently accelerated a second time where it was able to come to a stop in the driveway. The accelerator pedal had not been depressed. There were no warning lights illuminated. The contact sustained injuries to the back neck and had several cuts, but medical attention was not provided. A police report was filed. There was no reported fire or air bag deployment. The vehicle was towed to an unknown location. The local dealer was not contacted. The vehicle was deemed a total loss. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 120,000.