I'll believe this when I see it work.
I worked at a Japanese car company HQ in Japan for a few years. They are famous for the quality of their engines. I remember seeing reports of the extensive research they do tweaking their engines for another tiny increment of efficiency and power. I'd be really surprised if they overlooked a technology that would triple mileage per gallon.
It would be nice if this technology works as claimed.
But of course,
we must stop burning fossil fuels period. The fossil carbon (removed from the atmosphere hundreds of millions of years ago) we return to circulation in the atmosphere thereby is turning the ocean to coca cola.
The oceans are a "carbon sink". They have been sucking up most of the fossil carbon dioxide humans produce for a hundred years now, and they are getting ready to burp.
Remember how coke is said to dissolve your teeth?
Carbon dioxide and water mix to form carbonic acid, which dissolves the calcium carbonate of which all the clamshells and coral are made.
More importantly, it dissolves the shells of the tiny ocean-borne phytoplankton that produce most of the earth's oxygen - a great deal more than rainforests etc..
So IMHO this engine amounts to stabbing the earth in the heart with a needle instead of a knife.
Still, it will be interesting should this engine technology live up to the claims. It won't make things worse.
Those guys at my former car company were covering up a lot of things (deadly manufacturing defects

) when I was there and I had no clue.
Sure would be nice if I'm wrong.
