So this is sort of related to this thread, since some of you very technical people started talking about PV etc.
Have any of you guys looked into this? http://solarroadways.com/main.html
Look through it before making the obvious objections (glass road surface will break, will be slick in snow, etc), as they have addressed reasonably well almost every one of those on the site. I've been following this project for a few years now, and seen just about every objection that people could bring up, and they're all generally addressed.
It would take some serious shifts to make it work, but it seems like with some more development it could be really viable. Decentralized is the way to go, in today's climate...