Related by context. Frequent words. (Click for all words.) 68 EVs 65 HEVs 64 PHEVs 63 PHEV 60 FCX Clarity 58 hydrogen powered 57 zero emission 57 hydrogen fuel 56 electric powertrain 56 i MiEV 56 Electric Vehicle 55 Chevy Volt 55 hybrids 55 Nissan Leaf 55 hybrid electric 53 HEV 53 Chevrolet Volt 53 Volt 53 hybrid powertrain 53 Camry Hybrid 53 Transit Connect Electric 53 Prius 52 vehicles 52 hydrogen fueling 52 hydrogen 52 MINI E 52 Civic Hybrid 52 Tesla Roadster 51 Nissan LEAF 51 lithium ion batteries 51 Chevrolet Volt plug 51 electric propulsion 51 hybrid propulsion 51 diesels 50 electric hybrid 50 Fuel Cell 50 Fisker Karma 50 LCVs 50 drivetrains 50 hydrogen refueling 50 EV 50 Hybrid Electric 50 electrically driven 49 Toyota Prius 49 Electric Vehicles 49 Etios 49 diesel powered 49 EcoBoost engine 49 Ampera 49 electric hybrids 49 hybrid Prius 49 powertrains 49 Chevrolet Volt electric 49 recharging stations 49 Chevrolet Cruze 49 Smart Fortwo 49 nickel metal hydride 49 smart fortwo 48 minicars 48 Li ion 48 Hydrogen 48 Li ion batteries 48 lithium ion battery 48 Roadster 48 EV charging 47 Camry hybrid 47 hybrid 47 powertrain 47 lithium ion 47 Li ion battery 47 Escape Hybrid 47 conventionally powered 47 Chevrolet Cruze compact 47 Fusion Hybrid 47 V6 engines 47 Nissan 46 minicar 46 Azure Dynamics 46 Lithium ion battery 46 Ford Transit Connect 46 Prius hybrid 46 Renault Nissan Alliance 46 Toyota Prius hybrid 46 Honda CR Z 46 Cruze 46 Prius hybrids 46 internal combustion engines 46 Mazda6 46 Mazda2 46 Fuel Cells 46 flex fuel 46 Compressed Natural Gas 46 combustion engine 46 telematics 46 IdaTech 46 CNG 46 electrification 46 Kizashi 45 subcompact 45 TARDEC 45 Mazda CX 7