Tl* the contact owns a 2008 lincoln mkz. the contact stated that the brake, the driver seat belt and air bags failed. the contact experienced an intended acceleration. the contact stated that while driving at 50 mph, while depressing the brake pedal, the vehicle failed to stop and the emergency brake also failed to stop the vehicle. as a result the contact crashed into an embankment. the air bag failed to deploy. the contact sustained back and head injuries that was encounter with the steering wheel and windshield. the front passenger sustained lower back injuries both required medical attention. a police report was filed. the vehicle was towed to a tow lot. the vehicle was not taken to a dealer or an independent mechanic for a diagnostic testing. the manufacturer was not made aware of the failure. the failure mileage was approximately 144,000.