The YouTube algorithm will occasionally throw in something 'new' to the 'home' list. This led to this CNBC interview with AFC Energy who makes a membrane for fuel cells: Some curious, unanswered questions starting at 1:57: "18,000 sq km of wind farm to power all of UK lorries" "blue hydrogen from natural gas relies on CCUS (Carbon capture, utilization and storage) which has never been successfully deployed" "hydrogen gas is twice as expensive as natural gas" Reviewing their web page, Homepage - AFC Energy, we share the same understand of the physics and chemistry. For example, we agree that shipping hydrogen by ammonia give 3-5 times the hydrogen density of any other form. But they seem to think the problems of hydrogen have been solved. Bob Wilson
