Traveling at 70 MPH on [XXX] in traffic, the vehicle suddenly lost power and I was forced to unsafely maneuver to the shoulder of the road as the vehicle decelerated through the traffic. As soon as I stopped, the vehicle lost all power. I had difficulty engaging the parking brake as I was on a hill and the vehicle started to roll back. The brake pedal did work so I could stop the car but I could not exit the vehicle in fear of it rolling back into traffic. I called 911 to explain the situation. After 20 more minutes I engaged/disengaged the parking brake several times and it finally held. I still would not leave the vehicle because I could not trust it at that point. Another 20 minutes passed and a road ranger arrived and placed a wooden block behind the wheel and at that point I felt comfortable to get out of the car. I was told by Kia service the issue was related to recall SA553A but I was never notified. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)