I see. It sounds like air transportation was more necessary in your world.
It could be an issue mainly due to high traffic or accidents, but they get the job done. Though they might all be ground transport, they didn't all share the same space. Trains required railroads while cars and buses needed asphalt for the smoothest drive.
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It could be an issue mainly due to high traffic or accidents, but they get the job done. Though they might all be ground transport, they didn't all share the same space. Trains required railroads while cars and buses needed asphalt for the smoothest drive.