While last year’s Green Car of the Year award seemed focused on which green vehicle technology would take the lead (compressed natural gas, electric vehicles, hybrid, or clean diesel), this year’s list emphasizes efficiency – and includes brands you might not expect to see. Nominees for the 2013 award include the Dodge Dart Aero, Ford C-MAX, Ford Fusion, Mazda CX-5 SkyACTIV and the Toyota Prius c.