There is no free lunch when it comes to energy. According to Wikipedia the energy content of ammonia per liter is a third of that of disel. Even if we take his numbers at face value, we'd multiply the 25 cents per liter by 3. And we get a number about half of the price of gas. How much of that is taxes? You're not saving anything.
I've consistently found it's about half the energy density. But I am parroting. Still, you make a fine point. It's crazy just how must of the gas price is actually taxes.
And consider this, on industrial scale ammonia is made by combining H2 and N2. Here is how H2 is made:
There are four main sources for the commercial production of hydrogen: natural gas, oil, coal, and electrolysis; which account for 48%, 30%, 18% and 4% of the world's hydrogen production respectively.[6] Fossil fuels are the dominant source of industrial hydrogen.
So, all but 4% of H2 is made from fossil fuels, with the bulk of it made from oil and natural gas. Running cars on ammonia is like running cars on gasoline with extra steps, and probably with a lot more issues.
You're not going to get cheaper fuel for cars by using ammonia.
This guy also has his own ammonia production method. Which is what he's basing his price on. I have no idea how it compares. He believes it is favorable.
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