Alice clung on and looked through the armor glass to see they were headed toward the largest ship visible—fully a mile in length, half of its body pushed up and onto the dock with a swarm of trucks clustered around it. As they descended, a hissing noise penetrated the cabin, louder even than its humming engines. The roar grew to envelope the craft, and she realized it was the howling of a thousand electrical motors rising from the autonomous trucks as they ate into the ship’s hull.