Just a few months ago, Universal Hydrogen did a 200-mile flight of their Dash-8 which has been converted with one hydrogen engine. I’m not going to make any pr

Just a few months ago, Universal Hydrogen did a 200-mile flight of their Dash-8 which has been converted with one hydrogen engine. I’m not going to make any predictions about the future price of hydrogen vs. other fuels, but it doesn’t seem like there are any insurmountable technical barriers to mid-range hydrogen airliners.