I had read an article quite a while ago (several years?) about this guy and his work in (I think) Popular Science. From what I can remember of the article:
He was working with cheap Indian cars that were crazy inefficient after spending years in motorsports. He managed to do some good stuff then just by grinding grooves in the headers. He also wanted to make more bell shaped combustion chambers. He went to several companies with the idea and the only one who gave him a shot was Briggs & Stratton and they only let him test the design on an old 2 stroke mower engine. At the end of the article he was to begin working with an actual car company.
Interesting to see what has become of this.
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