And who is going to pay to setup the hydrogen station in your garage?

Not to mention hydrogen by volume is less than half the energy density as gasoline. High pressure insulated tanks will fill up the entire rear end of a typical sedan but only have half the range of a full tank of gas.

So if you have a Corolla converted to hydrogen, it will only seat two people (driver included), only have the range to drive 100 to 125 km on a single tank of hydrogen and have the cargo space to carry a only single bag of groceries.

And this doesn't include the problem and cost of making, compressing and storing hydrogen before pumped into the vehicle.

This is a "solution" which some people haven't really thought through well enough. Some countries can afford it because they are compelled by certain national or international clean air treaties or similar.