I am not sure where to put this. But it applies to both the model s and x owners. We all know that when you arrive and some slots are open we all go to the one that is NOT sharing charging slot. I.e. 1A and 1B is sharing. But 1A and 2A is NOT sharing. Nonsharing slots charges faster. However if all the slots are full. Here is my take on which slot to take to share. Take the slot with the tesla without the owners there. Here is my reasoning: 1) if the owners is NOT there then they don't really care about leaving quickly and is most likely there for the long haul. So take up the slot right next them. You are bound to share so might as well share it without some who is not going to care if you slow them down. 2) you would most likely piss someone off if take the slot right next to them when they are in a hurry. I mean they are there so they can get a quick charge and leave. IMO, why piss owners who is at their car waiting to get a charge to leave when you can perfectly use the slot with the unoccupied tesla. Either way you will be sharing the charge current anyways. 3) there is a chance the unoccupied tesla is done charging. So it might be better for you to share with a finished charging tesla. There is no reason for the owner to be at their car hanging around when their car is fully charged. I think if everyone uses this rule, I think everyone will be happier. Spread the word!