In ham radio, we call these people coat holders! The come into a nice conversation or discussion and start attacking people, turn the whole thing into mayhim, and stand back laughing. The best thing to do is don't recognise him, he doesn't exist. Keep going with your topic. He'll go find another group to poke with his sharp stick.
You obviously couldn't be bothered to click on the link in the original post:
http://www.hydrofuelsolutions.com/Go..._releases.html
which states that:
"California Environmental Engineering (CEE) has tested this technology and found reduction on all exhaust emissions. They subsequently stated: "CEE feels that the result of this test verifies that this technology is a viable source for reducing emissions and fuel consumption on large diesel engines."