start-up companies and the work is concentrated to some extent on the cathodes, by improving the officialsy, you could probably double the efficiency. but also on the horizon is is something called lithium sulphur, which is about four years away and will improve energy density by a factor of five. so today is a 40 mile range battery in a volt becomes a 200 mile battery. a little further on the horizon is is lithium air, which today demonstrates already ten times the energy density of today's lithium ion. one tiny problem. nobo nobody's figured out how to recharge it cht it's a primary battery. works once and then is disposed. i think the recharging thing will be settled. some historic figures. when we started working on the volt, lithium ion was quoted at $2,000 per kilowatt hour. through negotiation with various man factturer, we got it down to 1,000, then 950 per kilowatt hour. mean it's come far enough down on the cost curve to the last i checked, t was $350 per kilowatt hour and still dropping. to the point that fred made about it will soon be self-sustaining. i am a board member of a c