In this week’s show: A falling chunk of Car Talk Plaza barely misses our producer, convincing us it’s safer to go to the office as little as possible. Beau is about to give new meaning to the term “garage band.” He’s determined to go on tour with his rock group in a Dodge Ram that uses about as much oil as gas. Next, ever hear of “air mites?” John’s mechanics have discovered a scientific breakthrough in his tires – or maybe they’re just pulling his chain. Plus an instant “Stump the Chumps!” – the Tappets send Kerry on a fact-finding mission, and we catch up with her later in the show. That, and more, in this week’s Car Talk.