Related by context. Frequent words. (Click for all words.) 75 gas guzzlers 63 gas guzzling 60 gas guzzler 49 SUVs 48 Hummers 46 #x#s [002] 45 polluting 45 cars 44 scrappage 43 fossil fuels 43 Toyota Prius 42 automobiles 42 alternative fuels 42 carbon emissions 42 flex fuel 42 EVs 41 reducing carbon emissions 41 fossil fuel 40 scrappage scheme 40 greener 40 hybrids 40 diesel 40 diesels 39 vehicles 39 internal combustion engine 39 hydrogen powered 39 fuel 39 CO2 emissions 39 internal combustion engines 38 mpg 38 guzzling 38 reduce carbon emissions 38 carbon dioxide emissions 38 clunker 38 Priuses 38 electric hybrid 37 Prius 37 lightbulbs 37 incandescent light 37 hybrid electric 37 clunkers 37 hatchbacks 37 diesel powered 37 zero emission 37 light bulbs 36 carbon 36 petrol 36 electric hybrids 36 tailpipe emissions 36 supercars 36 cleaner burning 36 compressed natural 36 gasoline 36 Tesla Roadster 36 environmentally friendly 36 incandescent bulbs 36 guzzle 36 carbon emission 35 rebates 35 scrapping 35 biofuels 35 renewable fuels 35 greenhouse gas emissions 35 bio fuels 35 sedans 35 subcompact 35 limos 35 greenhouse gasses 35 Carmakers 34 Hummer H2 34 diesel engines 34 #g/km [002] 34 carmakers 34 greenhouse gases 34 sport utility 34 mileage 34 fuels 34 greenhouse gas 34 conspicuous consumption 34 Porsches 34 greenhouse gas emission 34 Cadillacs 34 emissions 33 Chevy Volt 33 biofuel 33 pickup trucks 33 hybrid 33 #mpg [002] 33 incentivize 33 Audis 33 minivans 33 pollute 33 incentives 33 bicycles 33 motoring 33 Chevrolet Volt 33 emission 33 environmentally conscious 32 polluters 32 Prius hybrid 32 subsidies