The Tesla website at Model S | Tesla Motors states: "When approaching a Supercharger station, Model S automatically parks in an open stall." That means that the car will have to know, for every possible Supercharger stall, if the charging pedestal location requires nose in or nose out parking. Some Supercharger sites offer both! That means the car needs not only incredibly detailed information about each site and stall, but also has to know its own location extremely precisely. If Tesla can make that work reliably, I will be impressed.