I've just bought a new Model S 90D and after driving my first 500km suddenly noticed a grey steering wheel appearing on the RHS of the digital speed display at the wheel for the first time while driving in town. As with the cruise control on the LHS, it disappeared every time I braked and appeared again when I accelerate. It's now disappeared again altogether with no sign of it since. Can anybody tell me what this is please.... Also, I don't seem to be able to even try the auto steering. Every time I pull the lever twice I get the message that it's temporarily unavailable! I also can't get auto park to work and have never seen the mysterious P appear. I drove past and sat next to a space yesterday, indicated left and put it in reverse, but no sign of the auto park facility switching on. Any ideas?