Reply to Dirk
Oula, I missed a step or what, if we compare to the heat engine, implicitly, that means that we are also talking about petroleum base (nat gas) for the production of H2 (reforming) and there, I don't think whether in favor of H2 ....
Basically I say that for a given quantity of hydrogen, a fuel cell electric vehicle will go further than the vehicle equipped with a hydrogen thermal engine.
On the production of bottled H2, we agree that we are clearly moving away from the objective.
This is why I added this comment:
On the production of hydrogen, there's no photo, the overall balance is not terrible unless the origin of the energy required is of the renewable type with storage
A heat engine will a priori always be polluting with a poor efficiency.
Wouldn't the solution be the fuel cell operating on a renewable liquid fuel that is non-polluting and not competitive with food? Manufacture from plants or its waste and processes using solar energy, wind power etc.
Chemists at work, it will change you from carcinogens.
A+