[Red Badger]

Any ICE engine can be modified to burn hydrogen.

Not as much BTU power to the wheels, but useable.

And people can make hydrogen at home, slow but possible..............

[fhayek]

I believe that the fuel tank for hydrogen would have to be pretty large. It would take up the space that is used for passengers now, if you wanted any kind of range. You can use liquid hydrogen to minimize the space, but that would require energy to maintain the low temperatures. And you wouldn't want to store such a vehicle in your garage. Inevitable leakage of hydrogen can fill the garage with inflammable hyrdogen gas. Think the Hindenberg... Certainly, engineers are working on these issues, I would imagine.

[usurper]

Any ICE engine can be modified to burn hydrogen.

Questions never asked: How many gallons of fossil fuel does it take to create a gallon of hydrogen?

Sounds about as clean as EVs powered by coal plants.