Car Accelerates On Its Own problems of the 2007 Toyota Camry Hybrid

While parking, my vehicle suddenly accelerated while turning into a parking spot. I did not inadvertently press the accelerator, and the accelerator was not entangled in the floor mat. The vehicle rapidly accelerated over the curb, through an adjoining grassy area, and stopped after hitting a cement wall. Later, the car was inspected by the Toyota dealer where I purchased the vehicle. The dealer indicated there were no problems with the accelerator or other equipment that would have caused this sudden acceleration.