I picked up my 2014 P85 inventory car from Rockville, MC on 12/23. What a Christmas present! While waiting at the Supercharger on the way home to NC with the car I read the window sticker that was in the glove compartment. Low and behold it listed HPWC connector cable $1200. I did not get the cable with the car, nor was it shown on any of the earlier paperwork from Tesla. Of course I will contact my Delivery specialist asap, but my question is how to use the cable if I don't have the HPWC box at home. I have the 50 amp 14-50 box installed. Thanks for any responses and please excuse my newbie ignorance - much to learn about Grace (so named because she is so Amazing).