Planning a hitch-hiking, vagabond-style trip to the states. Movies in the same spiritual vein? Movies about the South?

I'm in the early stages of planning a trip to the states this summer. A buddy of mine is out there already so we're gonna link up and hit the road for a month - 6 weeks.

New Orleans, Memphis, Savannah, Charleston, Asheville, Austin, Big Bend National Park, and the Great Smoky Mountains National Park, Marfa, Texas - a few southern places that are standing out on vague inspection. I reiterate; vague inspection.

We also might go up the West coast too. We're planning on doing it pretty cheap, hitch-hiking where possible, couchsurfing, motels, hostels etc. We've no car.

I love films and my favourite film happens to be a road movie of sorts - five easy pieces.

Any recommendations for great movies about vagabonds, drifters or just straight up travellers?

Preferably set in America. Also any great movies set in the south I should watch - road/adventure movie or otherwise?

Muchas Gracias