"Know thy gadgets; first step in restoring some kind of wholeness to one's life." So observes John Jerome about his purpose for rebuilding a 1950 Dodge pickup. Yes, he needs the truck to haul manure, but Jerome also hopes that "by knowing every nut, lockwasher, and cotter pin I could have a machine that had some meaning to me." Thus his year-long odyssey under the hood, among the brake shoes and valves, becomes more than a mechanic's memoir; it is...