I was backing up into my parking place in an alley way. I was turning slightly to the right to fit in and the car started to accelerate. I hit the back wall with the rear of my car. I put the car into drive not realizing it was still accelerating. I had my right foot on the brake. When I put the car into drive it accelerate very quickly even with my foot on the brake and I crashed into a door garage, wrecking my car, the garage door and the vehicle parked inside the garage. The automatic emergency braking system never activated either.