2020 Lincoln Nautilus WHEELS,SERVICE BRAKES

Manual Park--release cable escaped its locking position, locking front wheel brakes ON. The locked brakes resulted in the car being dragged until we noticed the problem and exited the motor home to reinstate the cable into its locking position (to re-seat the metal bead in the pocket, locking it in the override position). Dragging the locked wheels creates a fire and traffic hazard with large plumes of blue smoke, potential towed-vehicle fish-tail out of control affecting nearby/adjacent traffic lanes. This issue was confirmed by my long-time mechanic (Deckard Pham) as a design deficiency that could fail due to road vibrations, that it was intended for limited use for emergency towing. This incident has occurred four times over the past year; twice, at low speed (so tire damage was minimal). Most recently, it was discovered too late to prevent tire damage -- [XXX], while traveling at 45 mph, severe flat spot (7" long, full width of both front tires), wore tread down to the steel belts. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)