RE:Some thoughsIn a recent post, I indicated that the weight of compressed H2 required for FCEV's with ~300 mile ranges were about 27 pounds. This would indicate that its (H2) requirement is (27. 0 pounds divided by 0.0056 pounds per cf) or 4,821cf, as H2 weighs 0.0056 per cf.
Recently I read in this link https://www.treehugger.com/cleantechnology/fun-facts-about-hydrogen-and-fuel-cell-vehicles.html that “Just over 5 kilos of hydrogen deliver a 300+ mile range for a full-sized sedan”
Under this info, 5 kilo would be about 11.0 pounds, or (11.0 poundsdivided by 0.0056 pounds per cf) which gives 1969cf of H2. In effect (when/if) 1.0 million FCEV were operating annually the requirement would be 1.969 billion cf of H2. This is not out of line with present hydrogen use in fuel cells and other purposes, which in the US is about 100 billion cf annually.
Since both (4,821Bcf or 1,969Bcf) are small a portion of the US annual production of 100Bcf of H2, it shouldn't be a major task to connect FCEV Fueling Stations to the present hydrogen infrastructure. Initially a good portion of that hydrogen would be from hydrocarbons, but such would be the best way to establish the use of FCEV's along with Battery Electric Vehicles (BEV's), both of which use graphite..
In time whatever hydrogen goes into FCEV's can be hydrogen produced from water.