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Okay, so planes can fly using H2 and fuel cells (another kick in the nuts for Germany's Liberals' fetish #efuels #FDP).
However, what these flight tests don't show are two things:
* Can they fly as cheaply as today (I guess they can't)?
* Will they actually use green H2 or will they (the aero industry) lobby to have blue/greyish H2 labelled as climate friendly and let future generations pay the bill (I fear so)?
