[ncmncm]

A safety argument does not favor consumer-level use of hydrogen. Nor, of ammonia.

But synthetic liquified hydrogen, produced at airports from power delivered on transmission lines at times when power is cheapest, and banked, will certainly come to drive aircraft where cost matters.

[Jistern]

I think you are correct; I was very probably wrong. I did some research. NH3 (Ammonia) seems like it will be used, at least, to power large cargo ships in the near future.

I didn't realize that Ammonia is essentially a cheaper and easier way to store hydrogen.

Thanks for enlightening me! I appreciate it.