H> For several years, the airport in Frankfurt, Germany has been using
H> transport busses. Dont know if they are still doing it, or if it
H> were a
H> study. They emit
H> only water vapor.
H> I guess I automatically suspect GM of BS and grandstanding about
H> things they
H> dont intend, or cant, deliver upon
While the emissions from the buses consited of water, one has to take into
account the emissions from the process that produced the hydrogen fuel.
Intuitively one would expect the total to be higher than simply burning
hydrocarbons in the bus engines directly and cut our the intermediate steps.
Hydrogen fuel does displace where emissions occur, but what we are after is
a reduction in total emissions.