color me cynical but if forced to pick between t-boone and apd i'd go with the former when it comes to cars. The folks who think H2 fueled cars are environmentally friendly because they only emit water are being disingenous. I'd bet the H2 is from steam reformation of NG and between that and the extra materials expenses associated with storage and transportation of H2, NG fueled cars would be cheaper and more efficient (and consequently more e-friendly). If carbon capture is thrown into the mix (because this is at least partially driven by environmental concerns) then battery powered cars are probably better than both (but i'll admit to that being a WAG 'cause i don't know what the energy and emissions costs are for battery manufacturing).
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