You would have thought that the principle is so obvious that it's maybe a day's work to build and test something like this. You can bet that a few have been built, but for some reason, even though you get extra hp and milage, no company has fitted it on their cars, even though on an individual basis they only cost $64.
I notice that for some reason, as in so many ads of this type, the findings have been confirmed by an independent business that they just can't tell you the name of. You'd think that with all the publicity such a story would generate, testing organizations would do something like this for free.
Finally, there's mention of magazines where info has appeared. Yet when you click on this part of the web page, the destination is . . . the web page you're already on!
I think that your money would be better served in the "Buy Venture an LS430" fund. I promise if enough people send me 64 bucks (it'll take around 1,000 of you) I will definitely post a picture of me smiling at the wheel.