This week on The Best of Car Talk, Marc bought a used Peugeot for $100, and, believe it or not, that wasn’t his worst mistake. Now he’s got a car he can’t drive, and a mechanic who can’t get the part, but did obtain cash from Marc’s wallet. Elsewhere, Edward needs a monthly subscription to replace his Altima’s distributors; Mary’s husband insists on leaving the car running while he pumps gas because he’s never seen one blow up, perhaps not realizing that’s because everyone else turns their cars off; Nigel may be better off not knowing what his mechanic did to get his Mercedes to pass the smog test; and Heather is looking for the perfect practical joke to play on her brother, through his vintage Toyota Supra. All this and more, this week on the Best of Car Talk.