This year marks the 50th anniversary of the granddaddy of American road-trip books: Jack Kerouac's On the Road. 25 years ago, William Least Heat Moon wrote a less frenetic road-trip book a trip through small towns with funny names, talking to guys in gimme caps, and eating at four-calendar cafes. The book inspired WPSU producer Cynthia Berger to take a similar road trip back then . . . and she spent the last 8 weeks repeating the experience with Blue Highways as company.