This week on The Best of Car Talk, Rory's ego is in trouble, after he failed to siphone gas from his car to his lawn tractor. Has siphoning gotten more difficult, or is Rory just incompetent? Elsewhere, Tom doesn't know if it's worth cautioning his son about driving cross country in a pickup truck, if all he'll get in return in the "stunad stare". Also, Maggie's gauges stop working only when she drives by the Mall of America; Darlene's road trip from Colorado to San Francisco felt like she was floating on air, likely because she really was; and on Stump the Chumps, we find out if marriage cured Ellen's fiance of his obsession with performance add-ons. All this and more, this week on The Best of Car Talk.