This interactive map from NPR, which shows hybrid and electric car sales figures across the U.S., is a handy way of calculating the hippie concentration of your area at a single glance. But it also might help predict which areas will get EV infrastructure soonest, because of high demand. Also, it's kind of neat. San Francisco is leading the pack, no surprise there, and on the whole the West Coast is seeing more green car sales than the East Coast or the Midwest. I'm surprised that my city, D.C., had the highest hybrid and EV sales percentage on the Eastern seaboard — maybe you'll find similar surprises about your area.