The Reivers (1969)

"Boon is a reiver (that's a cheat, a liar, a brawler and womaniser) and he had just four days to teach young Lucius the facts of life (like cheating, lying, brawling and womanizing)."

In turn-of-the-century Mississippi, an 11-year-old boy comes of age as two mischievous adult friends talk him into sneaking the family car out for a trip to Memphis and a series of adventures.