Hydrogen has about 3x the energy per unit mass of petrol, but in terms of volume when stored in a fuel tank it falls well short. Even in compressed cryogenic liquid form hydrogen only has about 25% the energy density per litre of petrol.
Now consider that they're saying that 60% of their "stuff" is plain water contributing nothing to the stored energy, and the fuel cell will be at best 50% efficient, I don't see how this could come anywhere near having the same range as a petrol car let alone twice with a normal sized fuel tank.
^^This.
This bit stuck out like a sore thumb.
Tell me what they claim the substance is and I can give you an idea if it is plausible.
They seem to be saying it is 'open source' (words that appear on their web site) but no mention of what they are open-source-ing.
FWIW you can't patent a chemical substance either, which is what it is, but you can patent the process to make it. So there would be no patentability issue with them coming clean on it and explaining what it is.
The thing that sticks out and makes it 99.9% BS is that they might as well say what it is because as soon as they release it commercially everyone else will figure it out and make it for themselves, in which case they'd apply for a patent, which I cannot trace. So that option is out.
OK, there is another alternative which is that they think the process to make it is so fiendishly complicated that they want to keep it a secret because no-one else will figure it out. That is a good reason not to patent something. but if that were true, they'd have no qualms at explaining what this substance is. In fact, there is a good reason to do so, because there is no point creating a manufacturing infrastructure around something you think no-one else can copy only for them to copy it easily. If you release a description of the substance then others will try and you'll know soon enough if you are deluding yourself [that others can't make it] or if it is easily made by others [in which case you would think twice about your business model].
So, yeah, the appearance of the thing given their behaviour is that it is an investment con. It is for them to demonstrate otherwise. What is this substance?