This is a 2013 Ford Edge Limited w/V6 engine. While driving, there is a sudden loss of engine power, the engine goes to a rough idle, all the warning lights come on and there is no throttle response. After shutting everything down, the engine will finally restart after several attempts and run normally. This has happened multiple times, the last time while driving on the Interstate. The vehicle has been into the dealership 6 times for repair. So far, the throttle body was replaced, a sensor was replaced, the accelerator pedal was replaced and some wiring was replaced. The last time the problem occurred, the vehicle was returned to me after the dealer was unable to duplicate the problem. I subsequently returned the vehicle to the dealership because as far as I am concerned, it is totally unsafe to drive. I then contacted the Ford Customer Relationship Center and was assigned a case number. The Ford regional service manager assigned to the case was totally ineffective, finally telling me that because the dealer was unable to duplicate the problem there was nothing further they could do and I should come and pick up the vehicle. Has anyone else experienced a similar problem, and if so, how was it resolved?