As airlines confront climate change, this retrofitted, hydrogen-powered plane was designed with hopes of beginning the “race” in the U.S. to reduce airlines’ carbon emissions.

A small plane retrofitted by a U.S. environmental company to run on something other than jet fuel aced its test flight earlier this month in Washington state.

The plane was retrofitted with the capability to run solely on hydrogen – which went “beautifully,” according to the test pilot.