Thanks. I thought you were referring to something more recent.
I don't understand the value of producing hydrogen from ammonia. Ammonia itself is produced from hydrogen gas and nitrogen-- using natural gas most frequently as the feedstock, and sometimes LPG or petroleum naphtha.
Methane is used to create hydrogen gas and combined with nitrogen to create ammonia. It's called the Haber process.
So why would one take an extra step to create hydrogen by then breaking ammonia back down?
Even if it's somehow more efficient, it won't break dependence on fossil fuels as ammonia is produced from fossil fuels.