A home converted electric car

[Handy_Dan]

Oh, LoL - it doesn't work like that

Hydrogen is usually considered an energy carrier, like electricity, as it must be produced from a primary energy source such as solar energy, biomass, electricity (e.g. in the form of solar PV or via wind turbines), or hydrocarbons such as natural gas or coal.[2] Conventional hydrogen production using natural gas induces significant environmental impacts; as with the use of any hydrocarbon, carbon dioxide is emitted.[3]

That quote is out of context.  Try reading this, it is much more on point.

https://en.wikipedia.org/wiki/Hydrogen_vehicle