Federal Government is involved with procuring HUB installations, goal is to bring cost down. For some time now, the FED's have also been working with industry on tank design for Hydrogen Fuel, for a few years. Maybe you have see tanks going from 5,000 PSI to 10,000 PSI. Not to mention delivery vehicles for hydrogen fuel. These plans have been in place for some time. With the passing of infrastructure bill, providing money for Hydrogen Hubs etc. The next couple of years will be exciting. Hydrogen is the ultimate fuel.