Here's an instrumented demonstration of a hydrogen booster like the Hydro 4000.

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To conducts its test, WPTV first calculated the number of miles per gallon the station's Dodge Ram pickup was getting. So they put it on something called a dynamometer -- kind of like a giant treadmill. They ran the truck there for 20 minutes at 55 miles an hour on a full tank of gas.
From the WAVE3 TV STATION'S TEST SUV SUCCESS:.But does it work? WAVE's sister station, WPTV in Florida, put the Hydro 4000 to the test, by installing it on one of its own news vehicles that was checked out and given a complete tune-up beforehand.
The test showed the truck was averaging roughly 9.4 mpg.
After installing the Hydro 4000, crews drove the truck as usual for nearly a month. Havanich said that would give the device time to clean out the engine.
When the truck was put back on the dynamometer for the same mpg test, results showed it was averaging 23.2 mpg.
http://blog.360.yahoo.com/blog-em9a0i0zbqQJXUqZy7DEFX9kDQLrClg-?cq=1
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