"Macon County Line" belongs to the redneck car/thriller genre, which overlaps with Southern Gothic (e.g. "The Fugitive Kind") and redneck car/comedies (e.g. "Smokey and the Bandit"). Many of these films take place in the South, but not always; there are tons of rednecks all over, even in the most "progressive" states, like California and Washington.
The plot revolves around two brothers in 1954 traveling through North Carolina. After picking up a lone female, their car breaks down in Macon County where they encounter a bigoted Sheriff. A crime takes... read the rest.