Texas based Ronn Motor Company (RMC) has unveiled the Scorpion sportscar that runs on a 30-40 percent blend of hydrogen and gasoline, promising reduced emissions and 40 mpg plus efficiency.

Rather than using fuel cells to power an electric motor, the Scorpion would have an internal combustion engine burning both gasoline and hydrogen, achieving 40 highway miles per gallon.

Unlike with a hydrogen fuel cell car, the Scorpion’s “hydrogen on demand” system wouldn’t require a high-pressure hydrogen storage tank. Nor would a driver need to find and fill up at a hydrogen fueling station.