Despite having now taken three months longer than the airplane people, we're making disappointingly little progress toward the obvious next stage of vehicle: The Unobtanium-hulled tunneling ship from the 2003 film 'The Core.'

"Airplanes and Spaceships", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License

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Despite having now taken three months longer than the airplane people, we're making disappointingly little progress toward the obvious next stage of vehicle: The Unobtanium-hulled tunneling ship from the 2003 film 'The Core.'