[tikiman163]

The problem with hydrogen fuel is mainly one of supply. Even if they built hydrogen stations every 4 blocks across the whole world, the technology necessary to generate enough hydrogen to run even 5% of all the cars simply doesn't exist yet. We've had advance in the field of splitting water into hydrogen and oxygen, but it still takes more electricity to do than you get from using the resulting fuel can generate.

Other sources of Hydrogen simply can't keep up with power generation or transportation needs.

[pajko]

> We've had advance in the field of splitting water into hydrogen and oxygen, but it still takes more electricity to do than you get from using the resulting fuel can generate.

That's not necessarily true. Several years ago I have read somewhere that industrially water is not split by electricity (at least directly) but by heating metal plates to >1500 degrees Celsius and spraying water on them, or something like that. That's tremendous heat, but nowadays it's possible to reach so high temperatures by just using solar energy [1].

The technology is not yet feasible, but who knows, where it will be in 10 years... It also took some time for solar panel manufacturing to reach today's efficiency numbers [2].

[1] https://www.energy.gov/eere/fuelcells/hydrogen-production-th...

[2] https://www.smithsonianmag.com/sponsored/brief-history-solar...