As a test case for hydrogen refueling, Honda will also offer to Civic GX buyers in California and New York a home refueling unit called Phill.

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As a test case for hydrogen refueling, Honda will also offer to Civic GX buyers in California and New York a home refueling unit cheekily called Phill.

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It is contained within the case of the rocket, into which is pumped a liquid oxidiser called high-test peroxide (HTP), a concentrated form of hydrogen peroxide which is relatively safe to handle.

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For the test run, Mr Lerner used deuterium, a heavy isotope of hydrogen, as the gas.

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Likewise, BMW withdrew its own test fleet of 100 cars with internal-combustion engines modified to run on hydrogen.

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