On this week's Car Talk, John from South Carolina's model employee has an Achilles heel, which he's using to kill the clutch on the company truck. Can Tom and Ray stage a successful intervention and keep Steve off the unemployment line? Also, can Andrew rebuild the master cylinder in his '76 Mini, from the parts floating in his brake fluid? Can Shelly's Ford Focus fit enough kibble and catnip for a cross-country move? Has Sheila's dad returned from the grave to keep his beloved Buick Century safe in a dark alley? And how did a conveniently located tree help save a life? Answers to these questions, and more, on this week's Car Talk.