[maxfan8]

Hydrogen is simple to produce if you have access to water and electricity. Gasoline is much harder to do, though.

[vinaypai]

You also have to compress it to very high pressures to be able to store a useful amount of it.

[bufferoverflow]

No, it's not. Electrolysis is extremely inefficient. There are some modern developments with advanced catalysts, but it's not something an average person can do.

[gernb]

Yes but in quantities I can use the drive my car?

[vardump]

If it's simple, why practically no one is doing it?

Last I heard, 99% of all H2 was produced out of methane. Perhaps it's a bit better now?