Electric vehicles began to go on sale in December, adding to a list of “green” vehicles currently offered. 27 hybrid models are currently for sale including models by Porsche, Mercedes and Lexus. Green vehicles come in EV-electric only, hybrid-gas and electric, and plug-in hybrid with extended range batteries. The Chevrolet Volt is a hybrid while the Nissan Leaf will be an electric-only vehicle. 8 hybrid and 12 plug-in electric models are planned for 2011 with more in 2012.