🤗 I so love working on hydrogen fuel cells and thought it would be the thing that would be super clean for the environment back in the 1990s. I wished the technology was adopted back then and we would be much further with it today.

With that, I think hydrogen fuel cell tech is dead. Battery electric is good for short-haul flights. It's cost-effective aircraft to purchase and maintain. But what about long-haul flights? Well with current battery tech it's unscaleable. I think SpaceX's Starship will make long-haul flights of current jets obsolete. When Starship can go anywhere in the world in 30 minutes or less, who would ever book a 9 hour flight?

I see battery electric aircraft being used for short flights that are not practical for Starship. I see Starship being the fastest for hops from the west coast to the east coast of the US or places in between.