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The fastest airplanes we now have are jets.

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guy_liking_pretty_planes

Well-known member
Joined
Oct 28, 2020
Posts
54
What's the fastest we could make airplanes fly safely and comfortably with people on board with any known alternatives to fossil fuels?
 
Is there a feasible alternative (cost-wise, time-wise, safety-wise, comfort-wise, convenience-wise) to the present-day commerical airplanes powered by fossil fuels?
 

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