Bert found this, and I agree with him, it could be very, very important indeed.
Elon Musk intoduces new batteries which will pave the way globally for free solar power (after the initial investment, of course).
If we don't go this road, we will choke our planet and continue to have wars over oil, and we will be laughing stock for all the animals and all the other sentient races in the Galaxy.
Amazingly, the pre-order system is not USA-only, but for many countries. Unfortunately I live in an apartment where we are not allowed to put anything on the outside of the building, so I can't get solar panels. They say the battery can save you money anyway because energy providers charge different fees at different times of night and day, but I don't think that alone will be enough for me to do it. Otherwise I'd do this immediately. It would be so damn cool to live in a house independently powered by free solar energy.