I backed my tesla out of my driveway on 12/17. I could see as I backed into the street another car at the stop sign waiting to turn left. I was blocking part of the road so as the car was in reverse moving back, I put my tesla in "D". I clearly saw the D. I stepped on accelerator seeing they were patiently waiting and I wanted to get out of their way. As I touched gas I was in shock-I kept going in reverse! The car dash said "D" and in my shock i pressed down on the gas more. I ended up accelerating more in reverse and smashed right into a parked car on the street! I knew I was swerving back and steered into the middle of the street I thought. I never heard the warning sign on my car because it was in D. I didnt see the car in my rearview mirror and in the shock of the speed and my correct into the middle of the road, I dented my neighbors front left bumper only. Thankfully I didn't damage their lights. It only did a small scrape in the front right rear side of my model S. I did replicate the problem one more time on camera about 15 minutes later. But I was in such shock the camera drops below the road so it has my voice on it and I didn't want to hit someone else again. This is very dangerous to accelerate backwards when the dash says "D". I've taken the tesla in many times for the screens freezing. They say its memory issues and want me to pay 2500 to upgrade the internal parts. This puts my kids and anyone at risk if they're behind me when Im shiftin