Will hydrogen fuel cell technology never develop because it can’t be taxed like gasoline?

Gasoline, diesel, and even biofuels can carry a per gallon federal tax. Federal tax on fuel exceeds oil company profits on fuel. Revenue from fuel tax is a major source of income for the treasury.
Federal money is being spent to develop biofuels rather than hydrogen fuel cells, a cleaner form of energy. Our we losing out on better source of energy because it can't raise the same amount of tax revenue as crude oil?

How pratical are hydrogen fuel cell vechicles?

If a majority of our automobiles were replaced with vehicles which operate on hydrogen powered fuel cells, how could massive amounts of hydrogen be stored safely for refueling? How safe are these cars when the fuel tank ruptures due to collision compared to current gasoline/diesel ones currently in use? How many miles will the vehicles be able to go before refueling?

What impact could hydrogen fuel cell powered vehicles have on the environment?

Wouldn't the water vapor released from tens of millions of fuel cell powered vehicles create massive amounts of humidity to the point that in 50 years the whole earth will be covered in a massive humidity blanket which could raise temperatures and destroy ecosystems

I’m trying to find a hydrogen fuel cell chip for an electronics project, where is a good one at?

I recalled seeing a hydrogen fuel cell that was implemented on a chip that you could use for low power applications in an electronics project, but I am having trouble finding it. Where could I find a low-power chip that generates electricity from water to get the hydrogen for sale at?