What do you think I missed?
His notion that only "nitrogen and water" come out of the tailpipe is true, but doesn't mention the form the nitrogen comes out in is Nitrogen Oxide. Saying it's not a pollutant is simply a lie. It's a main contributor to smog and acid rain.
Riding down the road at a low speed briefly is not exactly a proof of concept, nor prove the market wants it in a variable load engine.
He's absolutely right it's used in jet engines, etc. Generally as a dual fuel, as I already talked about.
There's literally nothing new in his video other than, I suppose, his conspiracy theories about why ammonia is "kept down" despite listing where it's already used that are, apparently, immune to being kept down. IF his technology was the secret sauce, CAT or someone would buy the patent and make him wealthy yesterday. They have spent a significant amount of time and talent trying to get it right.