Physics can not be changed. The physical physical of hydrogen are known. The hydrogen age is q question of believe.
I resarch since September for a big test of electric scooters. There are always very concrete numbers like price, kWh/100km, maintenance costs, usage profiles when I discussed with the vendors. It's possible to discuss with them over a Cent, what such a vehicle costs for 100km.
It's at the electric scooters about concrete numbers and cost advantages. This vehicles are good enough, that's it not necessary to argument with the environment. It's possible to sell them to normal consumers looking only on the own money and not the environment.
Completely differen at hydrogen. Each attempt to discuss in Hannover hall 13 over the market of hydrogen vehicles failed. I gained the impression, that this are only show vehicles, to show on the fair, but never intended to sell.
There had been only lead acid batteries in the time when the dream of the hydrogen car was born. Lead acid batteries are very heavy, the capacity is much reduced at high power demand, the battery is finished after a few hundred charge cycles. If we would have only lead acid batteries today, I would be also a fan of the hydrogen car.
But today, hydrogen has to compete with complete different rivals. New battery technology with Lithium is by weight and charge cycles 3 to 5 times superior compared to the old lead acid batteries. Hybrid techology makes it possbile to drive short distances by electric power and long distances by biofuel.