Tesla quietly released a new cheaper and upgraded ‘Tesla Wall Connector’ Price drop apparently for this device, but I admit that I really don't understand all the electrical charging stuff. I have a model S on order (with a single charger-not dual), and I'm only going to have one Tesla vehicle for the foreseeable future. So, can someone explain to me what the Tesla Wall Connector would do for me beyond what my NEMA 14-50 outlet in my garage will do other than not having to get my charger cable out every time I want to charge the car?.......faster charging? something else? Thanks!!