Eliot Lees | Source | Vice President, Clean Transportation at ICF

What you’ll see is the infrastructure for hydrogen becoming important for the on-road fleet of heavy- and medium-duty trucks, and from there it will make its way into aviation. The most immediate focus is on the medium-range market, the regional aircraft market, the turboprops — that’s what can be converted much more quickly,” he said. They will likely use fuel cell technology to power electric propellers, whereas longer-range planes, down the road, would more likely combust the hydrogen for thrust.