Use roads at 60mph? I guess they're most efficient if they don't start the engin...

		lonelygirl15a on May 4, 2023 \| parent \| context \| favorite \| on: 22% jump in airfares expected as airlines tackle c... Use roads at 60mph? I guess they're most efficient if they don't start the engines at all and you put the plane on a boat or a train.