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streamlined and we're talking about equivalent of 200 m per gallon efficiency in terms of energy costs and no fossil fuels to burn totally
nonpolluting and these things are small and light enough that all of a sudden the we're discovering they you can afford to have
them solar power that in other words solar is very expensive but if you had a train you couldn't even create enough power to move a million pounds but when
Listen to native speakers pronounce “nonpolluting” in real conversational contexts with synchronized timestamps and subtitles.