I-5 in Oregon is newly equipped with high speed electric vehicle charging stations.  They are spaced 25 miles apart and can charge an electric car in about 20 minutes.  See http://www.tricityvoice.com/articlefiledisplay.php?issue=2012-03-30&file=Electric+Highway+++TCV.txt or  http://westcoastgreenhighway.com/electrichighways.htm