L337 for G337

Swifteroo brought to my attention a device called the GEET Engine, which supposedly runs on Petroleum-bases or other combustables to produce the same effects as a normal combustion engine, but has zero-emissions.

Now I fully admit, I am a gullible person. My girlfriend still laughs at the story of me getting all excited about a Discover magazine article I read in 1995 about burrowing hot-headed mole rats that burned through the ice in antarctica to capture penguins (see text here). I didnt figure out it was an april fools joke until I did some research on it 6 years later in an attempt to win a bet. Ugh.

Back to the GEET. The question is raised but not answered in the article, why has this technology not been adopted? Why hasn't anyone heard of it?