Old fossil fuel hardheads can choose to live in the past with their head in the sand but hydrogen is already here. Generated by cheap renewable energy, low cost since there is much curtailed solar energy.
Lets see some links showing your claims to be true. Authoratative links not from some enviro greenie source.
"On a mass basis, hydrogen has nearly three times the energy content of gasoline—120 MJ/kg for hydrogen versus 44 MJ/kg for gasoline. On a volume basis, however, the situation is reversed; liquid hydrogen has a density of 8 MJ/L whereas gasoline has a density of 32 MJ/L, as shown in the figure comparing energy densities of fuels based on lower heating values. Onboard hydrogen storage capacities of 5–13 kg hydrogen will be required to meet the driving range for the full range of light-duty vehicle platforms."
DOE
I'm sure that some Euro countries are running H2, but Europe is totally woke (meaning has taken leave of their senses) and just how far can you drive in Europe? Kohn to Dusseldorf is not Miami to Seattle. Mostly short local driving. Remember that Germany shut down their zero pollution nuke plants and had to start up a lot of filthy soft coal fossil plants to replace them.
As for citing LA as an authority, that's like quoting the village idiot. How are they going to move H2 from Utah to LA:
"Hydrogen embrittlement: Material engineers have contended with this issue for decades. If steel manufacturing processes aren't finely controlled, then the introduction of hydrogen atoms can make the steel more brittle, eventually risking ruptures and explosions if used to fabricate turbine blades or pipelines. Airplanes, helicopters, power plants, and pipelines have fallen out of the sky -- or been projected into it -- due to hydrogen embrittlement. The risk extends to merely transporting hydrogen through steel pipelines, which can absorb hydrogen over time.
On the one hand, the United States is home to over 3 million miles of natural gas pipelines used for gathering, transmission, and distribution. On the other hand, most transmission pipelines are made of steel, which creates safety risks stemming from hydrogen embrittlement. "
I'm not opposed to H2 use but I am aware of the problems, when engineers solve the problems then it may be practical. Right now it is just greenie theater.
