Good article. Elon is a corporate philanthropist (i.e. trying to create business that better the earth and mankind), and I would have to think he is going to put pressure on his lithium-ion battery suppliers to produce a cheaper, better, and earth friendly battery. Zenyatta has what he needs...

http://www.fool.com/investing/general/2014/03/20/is-tesla-motors-inc-risking-too-much-with-its-giga.aspx