As I was backing up, my car suddenly accelerated. I was shocked and tried to brake as fast as I could. I did slow down, but still hit a car that was parked nearby. This happened at a gas station. I did have the codes read, but nothing showed up. There were no warning indicators. At first I thought it was a driver error on my part, but after a great deal of thought and internet searching, I believe this to be car issue. I do have the surveillance security camera video from the gas station.