Using electricity to make hydrogen, then using the hydrogen to make electricity again is far less efficient than just charging a battery.  That's why the Japanese car manufacturers' attempts to get us all to switch to hydrogen powered cars have fallen flat.  It's more efficient to have battery powered ones.  And more efficient means that the overall fuel cost of running the car is lower.

(a take on things)

Battery EV costing the earth -  an environmentally and socially unfriendly  approach using still mined finite material; all out of sight out of mind of the minority 'rich' sanctimonious of the West, so they can do their bit driving around in their [un]clean vehicles ....     all part of the climate economy (not a crisis)  .    'We' should make it socially unacceptable to make, buy and drive these things.

Then there's solar and wind turbine ... laugh out loud.  

Hydrogen fuel is the way to go (until better comes along) - it is not a new thing at all- and once there is no money reward in battery ev and/or folk catch on with the cash cow con-job,  it will be pushed like its the new thing and for profit.  If there really was a crisis, it would all be done non-profit for the good of humanity ... but you know, the human condition and all.

By the way ... one could (should) use  small scale nuclear plant to provide energy for encouraging hydrogen from its bindings (and as back up); perhaps even harness the current Megawatts wasted in current energy systems.

Meh... what a farce the world is at the moment.  I rest  (got down off my tiny soap box - not that Im anyone).   :-)