Ironically, the best friend in the world of the greenies is Uncle Sam —by a mile.
The most recent UAV can go for 26 hours or more —silently— because of this technology.
Who can afford the first units? Uncle Sam.
Without the military, there is NO FREAKING WAY this green stuff would move forward, perhaps AT ALL —just too expensive for “real people” to buy the early units.
The hippies should all fellate the entire 82 Airborne, I swear.
You are absolutely right. How to contain the hydrogen and oxygen safely in a home? How to supply the expensive and rare platinum catalyst for the hydrogen anodes in thousands of homes? Not to mention the fancy electronics required. Way too expensive. There are other factors - clean-up after homes explode from faulty units, EPA approvals, etc.