Submissions that have been rejected by the Creativity Pool. - The Docks aren't necessarily the final destination, if a broken idea gets fixed it may travel to a more appropriate category.
By gracken
#15729
this one is a vague one, but here goes:

well, just that, an electric airplane.

Todays planes all run on petroleum derived fuels so one get's to wondering what are we going to do when our petrol reserves run out in the next 40 to 50 years

Obviously if in the next two or three decades we switch our cars to electricity there is going to be more for planes so this might not be as urgent as it seems

not necessarily electric either, a plane that runs on any natural fuel would be just as good, like ethanol or methane or whatever

maybe it would be good if we switched back to propeller planes, really fast and efficient ones

hell, you could even come up with a rocket plane that runs on hydrogen and an oxidiser!

Reward: around the world in eighty days!
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