![Tesla Supercharger site in Vacaville, California, before expansion [photo: George Parrott]](http://images.hgmsites.net/tmb/tesla-supercharger-site-in-vacaville-california-before-expansion-photo-george-parrott_100614960_t.gif)
California continues to lead the country in adoption rates for cars that plug in, both battery-electric and plug-in hybrid models. The state offers numerous local and statewide incentives, and many utility companies reward customers for choosing an electric car over a fossil-fuel powered vehicle. Combined, it's made for a very electric-car...