The Dog of the South by Charles Portis.
Ray Midge follows the credit-card trail left by his runaway wife and her former husband into Mexico. Charles Portis turns the pursuit into a journey filled with eccentric companions and practical disasters.
Read it for the stubborn logic with which people explain their own misadventures. The comedy invites a discussion of what keeps a person moving when the original purpose of a journey has become increasingly difficult to defend.
