Why not both? ;) Airbus is experimenting with liquid hydrogen: https://www.airbus.com/innovation/zero-emission/hydrogen/zeroe.html https://www.airbus.com/innov

Why not both? ;) Airbus is experimenting with liquid hydrogen: https://www.airbus.com/innovation/zero-emission/hydrogen/zeroe.html https://www.airbus.com/innovation/zero-emission/hydrogen/zer...