This week on Car Talk, Molly's boyfriend gets irate when other drivers fail to use their turn signals. But when Molly caught him committing his own blinker transgression, said boyfriend had a ready explanation, that may send the bogosity meter way into the red. Elsewhere, Terry in New Mexico has a long history of breaking in new cars and wives, both of which are being tested by his new Rav 4; Peter in Brooklyn's good deed went bad, after several gallons of post-Thanksgiving turkey oil spilled in the back of his Passat; and Jill in Wyoming is wondering why the local horses find her Jeep's hood so tasty. All this, plus a new Puzzler from the Road Trip series, and lots more, this week on Car Talk.