Based on all the newest technologies, Hydrogen provides the lightest and most powerful fuel on Earth.
Fuel cells have improved exponentially and common use in forklifts, semi's and initial vehicles (see $Toyota(TM)$ & $Bayerische Motoren Werke AG(BMWYY)$ ).
Legal standards and expansion plans for Green emissions have been issued throughout North America.
My thought - we are on the cusp of the newest winning dominant energy solution.
Plug is in initial growing phases, with strong foundations. Patience grasshoppers...
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