Could anything ruin a walk through one of America’s most beautiful and peaceful National Monuments? How about a radio show host complaining because he can’t get an espresso? This week on The Best of Car Talk, the tale of Tom and Ray’s ill-fated visit to the Muir Woods. Elsewhere, Bob’s friend may be victim of “Additive Placebo Syndrome” by disabling his running lights to improve mileage; Harmony hopes to get off the hook for smashing her sister’s car; and can Sasha learn how to drive a stick shift without giving her Dad a nervous breakdown? All this and more, this week on The Best of Car Talk.