The contact owns a 2008 Ford Mustang. The contact stated that while the son was driving approximately 40 MPH and pressing the brake pedal to reduce speed, the engine began to rev and the vehicle continued to accelerate. The driver observed that the accelerator pedal had remained pressed toward the floorboard and reached down to manually lift the pedal to reduce the vehicle's speed. The vehicle then drove into an intersection and crashed into a second vehicle. During the crash, no injuries were reported. A police report was taken at the scene, and the vehicle was towed away. The cause of the failure was not determined. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline. The local dealer was not contacted. The contact indicated that the vehicle was previously repaired after the same failure had occurred. No further information was available. The failure mileage was 95,000.