This time, the joke is on readers: unlike the rivals in Shark vs. Train, Fire Truck and Dragon are besties (“We get along great!” says Fire Truck. “Why wouldn’t we?”). Each time there’s a possible confrontation involving Dragon’s incendiary talents and Fire Truck’s capacity to extinguish them, the result is comically companionable. … Frustrated expectations have seldom been so funny; Barton’s misdirections are beautifully timed, and McCloskey’s digitally enhanced pencil-and-watercolor drawings are bright and exuberant.