Brand New Ford Mustang GT , less than 500 miles Sitting at stop light, whole computer system shuts off, could not turn engine off or unlock the doors, was completely locked in the car, after about 15 seconds computer rebooted and started throwing error codes. Car is still at the dealer being looked at. They cannot figure out why . Advice for anyone that this happens to leave the car running and take back to the dealer so that they can see the codes. Once the car is shut off the codes are gone.