I was slowly driving into a parking spot, perhaps half way into the spot when the car suddenly accelerated forward, went over the cement wheel stops and hit a cement wall. It resulted in me suffering a fractured sternum. I am absolutely sure I did not press down hard on the accelerator to cause this. I recall being slightly jerked back into my seat and then hitting the wall. I have no idea what system failed, but the car is available for inspection. I am unable to drive the car until repairs to the front end are done, which I am told will take a few weeks. Thus, the car has not been inspected by anyone as yet, but I most certainly want it thoroughly checked. It should be noted that the police report was taken in the emergency room while I was in pain and in total shock at what happened. That report was only my guess as to what might have happened.