Our 2025 BMW X5 50e was involved in an accident while slowly pulling into a parking spot at Bryce Canyon National Park in Utah. While turning right into the striped parking spot, the car suddenly accelerated, swiping the car parked to the right and continued on to break through a rung of the log fence barrier before manual hard braking stopped it from plunging into the canyon below. There was no audible alarm heard and apparently no emergency braking engaged to prevent impact with the other car or log fence. No airbags deployed. Emergency braking was enabled. Drive mode was Hybrid. With the grill damaged and a front sensor hanging below the damaged bumper. We are still awaiting the Park Ranger report.