This week, the sleaze alarm rings. The Tappets berate Mac’s evil twin for turning his back on fraternal responsibility. (What do you expect when your brother’s a lawyer?) Grandma Glenda hangs ten – and wants a hip new vehicle for her surfing safaris. Chuck calls for backup in a marital dispute over proper handbrake usage. Also, a couple of merry pranksters who take their practical jokes, and their revenge, very seriously. That, and more, in this week’s adversarial hour of Car Talk.