Think about it. I talked with Jason at Tesla and he said it faster to change the batteries (with proper equipment, lift, etc.) than a gas tank in a ICE. What if instead of supercharging stations you had a network of stations with batteries already charged and waiting for you to pull into a station, much like a car wash, that pulled off the old battery and replaced it with a new one, in less than a few minutes.
If you ever had an electric RC car, you know it takes 15 minutes to charge the batteries and 5 seconds to change it. I realize infrastructure would have to be put into place for this system, and a different business model, but the station could take your depleted battery and replace it with a full charged one, then charge the depleted one and once fully charged put it into another Tesla. The Tesla car itself would be 30k cheaper as you would only rent the batteries for a monthly fee and they would get properly recycled once the batteries were no longer useful.
It would work more like a battery rental than owning your battery. You would pay a fee for the use of the networked battery stations and have close to instant fill-ups. You could also simply charge overnight as normal if u desired.
I believe with the proper design, a lift system could auto replace batteries at each station very quickly. Something to think about for the future.
just and idea from a guy thinking about buying a Model X when it comes out.