Maybe you are thinking of 'The Reivers' which was made into a pretty good movie starring Steve McQueen.
'Travels with Charlie' was written by John Steinbeck.
I love Faulkner and have read a lot of his stuff. I reread 'The Sound and the Fury' not too long ago. I was amazed at the things he can do with senses. At times I could almost smell his scenes. His writing has a hallucinogenic quality that makes senses intermingle--sight becomes sound, smell becomes taste, et cetera.