This week on The Best of Car Talk, did Tom and Ray help Dana and her friend remove a chunk of the Berlin Wall from his Dad’s BMW? Dana’s back for a round of Stump the Chumps. Spoiler alert: the word “Dummkopfs” is used. Elsewhere, David thinks his Volvo is giving him Legionnaire’s Disease; Glenn has mice living in his Miata, and fears he’ll have to bring them along on his road trip from New Orleans to Oregon. And, Leanne is hearing a horrible grinding noise when she uses her new key in her husband’s Pathfinder. Is it coming from the car or her husband’s teeth? All this and more, this week on The Best of Car Talk.