1999 Pontiac Montana VIN [xxx] good weather good road condition. While attempt to accelerate a bit at about 60 mph the car began to accelerate on its own as though the cruise control was on. Tapped the brakes and made sure the cruise control was off but continued to accelerate. Put it neutral and the acceleration stopped. Problem kept repeating and didn't necessarily stop when in neutral. Then while car was in neutral and coasting at about 50 mph car switched into park on its own and stalled. Restarted car and got it over to the shoulder and turned it off. Tried to restart but the engine raced furiously. Called for a tow truck. The tow truck operator turned on the car and put it neutral to position it to winch it up the flatbed. The car put itself in drive and raced up the flatbed which was at a steep slope until it struck the front frame of the flatbed and the driver could turn it off. This was very scary. Someone could have been killed. Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Arlington, VA, USA