I have had problem getting the P to pop up for auto park. So, today the Tesla technician told me that for Auto Park, you need 3 points: 2 on the sides and 1 on the back ( e.g. 2 cars with a space in between and a curve or a car in the back). Otherwise, the P won’t pop up. I tried that a couple of times with both backin and parallel and it worked well.