I watched a movie called "Who Killed the Electric Car" and it raised a lot of suspicions although I know a few things were exaggerated and unfounded. They did bring up that Chevron owns the patent to NiMH batteries and will not allow them to be used for a voltage required for fully electric vehicles. As highly educated as you guys are, I was wondering what your thoughts are on the issue. Is battery technology being suppressed? Why haven't batteries advanced much? Why are lithium batteries so expensive? Is it really because the element itself is so expensive? Why haven't we improved their shortcomings (exploding, dead cells after few recharges, etc). Can we expect electric and hydrogen storage to be a much higher priority in the near future?