This week on The Best of Car Talk, our favorite depressed college freshman, Leah, checks in with an update on her whereabouts—physical and emotional. Did she adjust to life on campus and follow Tom and Ray’s advice to embrace failure? Elsewhere, Andy wants to know if electronic gizmos can improve his Suburban’s gas mileage to, say, 5 miles per gallon; Chris’ Belvedere is growing flowers in the front seat and stinks of blue cheese; and the severity of Dan’s coolant loss may be directly tied to his religious practices. All this and more, this week on The Best of Car Talk.