Anacronismi: The bus runs, in two scenes, on narrow gravel roads. No scheduled bus line anywhere between Chicago and Mississippi would have run on a gravel road since, maybe, the 1930s.
Continuity: Many people board the bus at the depot, but while traveling cross country the bus is clearly empty (apart from the driver).
Continuity: When Rosa Lynn Sinclair retrieves the letter from Earl Sinclair in her mailbox, the number on the box (her apartment number) is 817. On the letter it is addressed to apartment #5.