Instead of overhauling the electrical grid, gas stations just have to maintain cryogenic pressure tanks?

Exactly, my money would be on an inert storage format - if you could mass produce hydrogen and keep it around safely inert (with low energy cost to convert it back), EVs would be beat so bad in the long run it wouldn't even be funny...

EVs are nice in short term but battery issues like these illustrate their (should be obvious) shortcomings.

WRT to this battery technology, ironically the same sector being targeted by hydrogen might benefit, i.e. rail tech - if you stick a high number of cheap batteries onto a large, heavy motorcar, the energy differential is almost negligible as you make up for it in part through momentum, but also just scale (more passengers transported per watt, more charge available per trip).

Producing hydrogen directly from nuclear plant is being developed. https://www.iaea.org/topics/non-electric-applications/nuclea...

If you are doing electrolysis then solar/wind is a much better option than nuclear.

Much lower up front investment and none of the huge downsides of nuclear.

It might be green jut it is super expensive and not very green for the decade it takes to build a plant.

As opposed to how green it is to build a solar or wind farm?