Now that we've been informed by EM that higher optioned cars will be delivered first, it made me think more about what I want to do. If a person limits options selected when they configure their car, then that probably means their car will be delivered later, right? Well let's assume that having their car delivered later allows the person to save up more money for their purchase. Would you be able to add any additional options to your car prior to delivery? Of course I'm not talking about major options like going to dual-motors, or a bigger battery. But would you perhaps be able to add things like Auto-Pilot, Tech package, Super charging, etc.? Or would you basically be locked in once you configure your car? Of course, I'm speaking in generalities. But the sliding scale of cars being delivered vs how many options they have at least makes me ask that question. Of course, it would all depend on how long a period it is between deliveries of different configurations. Not sure how long the different option cars took to deliver with the Model S. Thoughts?