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Electric Jet Engine! Perhaps they have a windmill on top of the plane which perpetually generates electricity. The faster the plane goes, the faster the windmill spins, the faster the planes goes. what a drag eh?


It would not be a very pratical means of getting from A to B, however. According to my Acme Guide to Autocatalytic Motive Systems, the exponential increase in the speed of windmill powered electric jet engines eventually breaches the speed of light, launching the aircraft into parallel dimensions whence they never return.