This week on The Best of Car Talk, Darlene loves her husband but his ignorance about cars has left her at the mercy of a mechanic she doesn’t know if she can trust. Meanwhile, Susan may need to to dump her boyfriend before his “lazy shifting” croaks her Miata. Also, Richard is planning a road trip in a ’64 Dodge Dart and wants to know what spare parts he should bring along--although he might do better with a spare car; Dick’s van needs a new alternator every time the seasons change; and, will Tom and Ray actually give helpful advice to a used-car salesman? Find out, this week on The Best of Car Talk.