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I quite like the idea of helium filled airships. Everyone is in too much of a hurry these days But for long haul I think the idea is to develop engines to run directly on hydrogen gas, rather than fuel cells or batteries.
I quite like the idea of helium filled airships. Everyone is in too much of a hurry these days
But for long haul I think the idea is to develop engines to run directly on hydrogen gas, rather than fuel cells or batteries.
