Another question, probably only tangentially related: what is the connection between travel writing and midlife crisis? A disproportionate number of travelogues seem to be written by middle-aged guys who use their travels as an excuse to mope excessively about how nothing is as cool as it used to be.
"A Hell of a Place to Lose a Cow": An American Hitchhiking Odyssey by Tim Brookes - Brookes hitchhiked the US in the early '70s and retraced his steps in the late '90s. Not much here, since he spends more of the trip gazing at his navel than seeing the sights. A few interesting observations on how American culture has becoming increasingly fear-driven over time, but these seem to stem more from his preconceived opinions than from anything he experienced during his travels. Pretty dull, and badly in need of closer editing for grammar.
Rat Scabies and the Holy Grail by Christopher Dawes - Much more enjoyable. Rat Scabies, former drummer for The Damned, drags his neighbor Dawes all over France and England in the course of completely failing to solve the alleged mysteries of Rennes-le-Chateau. Dawes' incipient midlife crisis plays a mercifully very minor role in this good-natured tour of modern kookdom. Also useful to anyone who wants to get up to date on the lunacy that forms the basis of The Da Vinci Code without actually having to read the crappy book or see the movie.