This week on Car Talk, Marianne in Oakland is especially eager to find out why her Volvo's blowing a lot of hot air. She rides with her dog, and Fido's got a bit of a flatulence problem. In her overly warm car, the combination is producing a stench that could qualify as canine chemical warfare. Meanwhile, Chris in New Hampshire loves his decommissioned Crown Vic, except that it's doubling his commute time, because everyone else on the road thinks he's a cop and slows down. Can Tom and Ray offer any de-copification tips? Also, couples debate winter car washes and parking brake ratcheting, and we find out why mechanics love Saab owners. All this, plus a new puzzler from the Paint by Numbers series, and lots more, this week on Car Talk.