I was backing out of a parking spot, and there was a telephone poll behind me in my path. I needed to pull forward to navigate around this poll. After backing up some, I put the car into drive to pull slightly forward, and the car lurched aggressively, so much so that I got out to see if it'd caught on something. It did not -- there was absolutely nothing there. So I got back in and tried to continue forward, and the accelerator went full force. I floored the brake pedal, but the car behaved as though I was flooring the accelerator. The car drove itself over a cement block, through a staircase and into the brick wall of an abandoned building, continuing to accelerate for a few seconds while against the wall. Air bags did not deploy. I walked away without physical injury, thank goodness. There were no warning lights, symptoms of or dashboard indicators of a problem before or during the issue. Upon investigation online, we see that there is a pending class action for this exact issue. The vehicle has been inspected by our insurance carrier and been deemed a total loss. Insurance has asked that we turn the title over to them in order to receive our payout, and I believe they plan to destroy the car.