There is some credibility to what they claim. http://www.preignitioncc.com/better/ (Sorry, link no longer available.)
MIT is/has developed it for ArvinMeritor. Delphi is also into it, and other's. It's being used in India, and other countries. The GEET uses this, but it's even better because it uses exhaust heat to power the plasma.
http://video.google.com/videoplay?docid=2556125361216929366&q=mit+plasma&total=192&start=0&num=10&so=0&type=search&plindex=3 (Sorry, link no longer available.)
I just got a site up to sell hydrogen generators, and plan on developing this, and much more.
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