No, the engineer is correct - this is an unsafe contraption. These things have a very thin veneer of credibility based on the fact that they *do* create flammable fumes or gases. Not fast enough or in sufficient quantities to replace even 1% of the car's liquid fuel needs, but enough to turn its own container into bomb fragments.
I once experienced a battery explosion. A new (few months old) Sears Die-Hard with a defective internal connection arced just below the top of the case, where the positive terminal connects to the end plate. When I twisted the key to "Start", it went *BOOOOM!* and bent the corner of the hood up. Sears paid for the repair, after several threats from my attorney.
Good luck getting satisfaction from one of these scam artists if someone loses an eye or your car catches fire.
Prof, I disagree. On part of that. Yes, I have a scar on my forehead from a battery explosion. Hydrogen in a confined space does explode.
What I am disagreeing about is that putting something explosive in a car is any more dangerous than gasoline. Gasoline has MORE, much, much more explosive power than hydrogen. Sorry, that’s a physics fact. The “scientist” is talking out his ass.
When he said it was “dangerous” he was playing on emotions (something leftists are very well known for doing). He didn’t bother to say “Gas is MORE explosive than hydrogen”