So much wrong in your assumptions. How much space would a gas station need to generate enough H2 to fill say 10 Toyota Mirais a day?
Have you seen what Fusion Fuel is already delivering in Portugal. Large panels with PEM electrolyzers attached for $3 per kg pumping into the gas network, not cars.
You say 2 years ago, what progress has HYSR made in the last 2 years? Not confident they will make a second panel let alone 100 in 2 years