Check out "Born Fighting." IIRC by James Webb. It is a really interesting history of the Scotts-Irish.
It should keep you going on a long car trip.
One of the funniest things that happened to me was, I was walking in to work one day and we had a new Security Guard, a Black Kid. The Kid looked at me and said to a friend, "Who is that 'Cracker looking Mother F---Ker'", I am in charge of fire and security and a Swamp Yankee, turned out to be real good kid, stuck in a mind set."