For my wife's new Model S, we had a NEMA 14-50 outlet installed hear the front of our house where she parks. The outlet is weather protected with a lockable cover. The Tesla Mobile Connector for NEMA 14-50 has been back-ordered for a long time, but finally arrived a week ago. It works great with the covered outlet, allowing us to cover / lock the outlet with the Tesla Corded Mobile Connector. Now we just need to wait for the Tesla Cable Organizer to be back in stock.