On June 4 I pulled into a drive to turn the car around and park. I stopped the car, put it into reverse, and pressed the gas pedal;. The car stalled and I pressed the gas pedal again with the regular force. Suddenly the car accelerated and I felt a jerk and heard a bang as it hit a car that was just backing out of the driveway cross from min. My car was going so quickly that the other driver commented on the speed it was going. My car incurred considerable damage, the rebar was damaged, and I took the car int "collision" for repair. At Collision, I was told by 2 people that Mini had a problem with acceleration. Priori to the accident, my car occasionally stalled when I was backing it out of the garage. I have since been told that this "stalling" or "stumbling" was a signal that there was a defect that could have been fixed.