Ammonia is toxic and not something the average person wants to be anywhere near.
Think an oil spill or gas leak is bad? Try spilling a tanker full of ammonia in your neighborhood.
I can't believe that ANYONE considers this to be a good idea.
Except, of course, for Toyota. They're now miles behind in the EV race and frantically doing anything and everything to confuse the marketplace.
"Hydrogen is the future! Ammonia is the future! Uh... okay, EVs are the future, but just wait for our solid state battery!"
Available sometime in the future....