The vehicle was parked on a sloped driveway. After the driver exited the car, the automatic parking brake/Auto-P fail-safe failed to engage. The vehicle rolled backward unexpectedly, causing the driver-side door to strike a fire hydrant and rebound into the driver's body. There is significant property damage ($6000) and personal injury. Complete home security video footage of the incident is available [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)