The DOT at Washington State is publishing a newsletter about alternate fuels and vehicles. I've only read a couple of issues, but I think it's interesting. Here are a link:
http://www.wsdot.wa.gov/NR/rdonlyres/6545F8DA-340A-4311-96D0-E20083F0C7A4/0/HybridReportOct302011.pdf" onclick="window.open(this.href);return false;
http://www.wsdot.wa.gov/NR/rdonlyres/6545F8DA-340A-4311-96D0-E20083F0C7A4/0/HybridReportOct302011.pdf" onclick="window.open(this.href);return false;