So I finalized our order about a week ago and have a late Feb 2015 delivery date. After some help from the forums, I am realizing I should've added a HPWC to my order for home charging as that will be where 98% of charging will happen. Per the accessory website, the warranty is significantly different if purchased over the counter or bundled with your car (1yr vs 4yr). I can't find a way to add one to my order now that it is finalized so I have a call in to my sales advisor (apologies if there is a more official Tesla term for this person that I am not aware of) to see if it can be added as part of the car purchase so I get the extra 3yr warranty. He is currently following up on this with HQ to see "if" this can be done. In the meantime, I was wondering if anyone else successfully added a HPWC after their order was locked in and got it with the 4yr warranty? If so, please provide details. EDIT: I am only interested in the HPWC as a permanent mounted system for charging at home (not for the extra charging capabilities). This will allow me to leave the UMC in the car at all times and only use when we travel or in the event the HPWC malfunctions and doesn't work.