I booked my Model S 2 days back, order will be confirmed on the 10th of September. I recently read Elon Musk's reply on Twitter where he acknowledged the addition of some features (the response to the Palo Alto ad). Now I'm wondering if I should wait a wee bit more in the hope that I could get the new features in the car (even though it is uncertain). Also, the car delivery says late December, should I get it delivered in early 2015, so that at least the registration card says 2015? (even though there may not be any difference in the car per se, since Tesla doesn't have model years) What do you guys think?