Distribution network problems
Right. Problems with hydrogen storage in a vehicle have already been pointed out above. Then there's the fuel production and distribution network required for the stuff throughout the country. It's low-energy compared to hydrocarbons, but high-energy-cost to produce. With range comparable to existing hydrocarbon fuels you will need hydrogen fueling stations to be almost as common as current service stations. Who is going to pay for all this?
With electric vehicles the distribution network comes for free because all towns and cities are already wired. With hydrogen vehicles, someone has to pay the billions and billions in infrastructure and capital investment in all these stations and pipelines along with whatever the cost is to keep liquid hydrogen secure in tanks indefinitely. I don't know what that cost is, but I'm pretty sure it's a lot pricier than keeping hydrocarbon fuel liquid at STP.
IMO there is zero chance of these vehicles ever being deployed except as curiosities.