Eco-Friendly Power - You can now have great fuel mileage, low emissions, and tons of horsepower as developed by the man who started it all!
Johnathan Goodwin and his company H-Line Conversions, Inc. pioneered "The Conversion" of the H1 and H2 Hummers from gasoline, 325 … read more
The Patented Goodwin Assist is a revolutionary new technology for converting Hummers into highly fuel efficient plug in hybrids. The Goodwin Assist is focused squarely on bang for the buck proposition of maximizing fuel savings with minimal capital investment resulting in the short… read more
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