[aerohead]

In Richmond, California, CHEVRON was using landfill methane as its feedstock for hydrogen production. It turned out to be more carbon-intensive than conventional fossil-fuel.
Some reports on former-governor 'Schwarzenegger's Hydrogen Highway' figured that hydrogen stations would be located along California's existing natural gas pipeline network, and since hydrogen is hard to store without leakage, it would just be made onsite, on-demand, from the methane. Kind of a bummer, as this would place it next to hydro-fracturing, and the rogue methane emissions, 82-X more potent as a greenhouse gas than carbon-dioxide.
U.S. hydrogen might be 1% - 14% of energy demand by 2050, according to CARB. A carbon 'phasedown', not a 'phaseout' by 2045.
They're also going to have to absorb $40,000,000 plugging orphaned oil wells in Los Angeles and Kern Counties.
'Pay me now, and pay me later!'