Related by context. Frequent words. (Click for all words.) 57 gas guzzling 57 smog forming pollutants 57 hybrid powertrains 56 Honda Accord Hybrid 56 pickups vans 56 Fuel Efficient 55 Ford Fiesta subcompact 55 SUVs minivans 55 DRIVe 55 Hybrid Cars 55 MY# [003] 54 gas sippers 54 turbo chargers 54 diesel engined 54 pickups SUVs 54 automobiles 54 sport utes 53 Nissan Altima Hybrid 53 gas guzzling vehicles 53 Fusion sedan 53 diesel powered 53 gas guzzlers 53 Escape SUV 53 Hybrid Vehicles 53 SUVs 52 Tahoe Hybrid 52 diesels 52 Hybrids 52 AUTOSHOW 52 CUVs 52 Automakers 52 ForTwo 52 Eclipse Spyder 52 #.#L V8 #V 52 crossover SUVs 52 BlueTec 52 electric drivetrain 52 gas guzzling cars 52 ecoFLEX 51 iMiEV 51 Hybrid Concept 51 NGVs 51 efficient powertrains 51 Lexus RX#h 51 Toyota Prius hybrids 51 SUVs pickups 51 exhaust emissions 51 MARK PHELAN 51 hybrids 51 Wheego 51 GMC Yukon XL 51 Dodge Magnum wagon 51 particulate filters 51 #.#L I4 #V MPFI 51 BlueMotion 51 RX#h 51 Hybrid 51 SX4 sedan 51 econobox 50 Efficient Dynamics 50 smog forming 50 Saturn VUE 50 gas guzzling SUV 50 Flex crossover 50 Chevrolet Equinox crossover 50 superminis 50 Nissan Leaf electric 50 Zen Estilo 50 fuel guzzling 50 vehicles HEVs 50 fuel sippers 50 gas guzzling trucks 50 BlueEFFICIENCY 50 midsize crossover 50 CT#h 50 Buick Verano 50 Escape hybrid 50 Sky roadster 50 gas guzzling SUVs 50 Scrappage 50 alternative fuels 50 electric Chevrolet Volt 50 drivetrains 50 hybrid electric 50 exhaust emission 50 #.#L V6 #V MPFI 50 cars 50 microcar 49 diesel engines 49 Fuel Efficiency 49 hybrid drivetrain 49 gas guzzling Hummer 49 cleanest diesel 49 Honda Civic GX 49 HEVs 49 smog forming emissions 49 tailpipe emissions 49 Cayennes 49 Gas Mileage 49 Mariner Hybrid 49 gas guzzler