Current events in research...
Apparently some nano-tech research done at Stanford's Department of Materials Science and Engineering indicates that it might be possible to increase the life of a rechargeable lithium-ion batteries by a tremendous amount. The article mentioned the possibility of reaching a 40-hour life.
That's fantastic compared to current (excuse the pun) batteries. I agree with Professor Reynolds: "Bring it on!"
Something else occurs to me; is it possible to scale this technology up? Forty hours at 40 mph could give an electric car a 1600 mile range. Forty hours might be unrealistic (at least at first) but the possibilities are intriguing.