I am happy that the car is designed to make it easy to swap the battery. If only for later on in the next decade when people will want to buy a used Tesla but might want a new battery, specially if the battery tech in 5 or 7 years allows batteries to be cheaper or better.
(BTW, I hope supercharging will become a standard option on all Tesla's.)
But this being said, given that most commutes (afaik) dont even require supercharging, and that the range of Model S is good, and that supercharging is going to be available for those times you go far without taking a plane instead and also need to stop for a bite to eat on your way anyway, I dont understand how the need for battery swapping is that big as to justify all this? And, maybe I am overly optimistic, but in 10 years, the range of cars, the charging speed, may be even greater, making a battery swapping infrastructure even less needed for the purpose of driving around (as opposed to service or replacement for new battery with more range/new tech/faster recharge capacity). Is it just me?