question The lights running down the center of the bus are on, casting a weak luncheonette-at-midnight glow over the terrified, sweat-drenched faces of the passengers, but the world outside has turned dead black. Whirlpools of ash eddy in the radically foreshortened beams of the headlights. Henry steers by memory, wondering when the tires will explode beneath him. He’s still laughing, although he can’t hear himself over the scalded-cat screech of 19’s engine. He’s keeping to the road; there’s that much. How long until they break through the other side of the firewall? Is it possible they can break through? He’s beginning to think it might be. Good God, how thick can it be? “You’re doing it!” Pamela shouts. “You’re doing it!”Question 1: “The lights running down the center of the bus” refers to “The lights mounted in the middle of the bus”? I mean they are inside of the bus, right? What's the meaning of "running down" in this case? Question 2: Does “there’s that much” mean that “there’s still much to go”? Question 3: Does “You’re doing it!” in this case mean that “You’re making it!” ?