Breck drives the Ford Bronco with the gearshift in "Park".
Near the end of the scene, the brakes of the "runaway" hearse are applied.
Near the beginning of the movie, Breck limps up the stairs to his front porch and one leg doesn't bend at the knee. Later, when he leaves the house to give the $200 to Nancy when he descends the same stairs both knees bend fine.
A squib can be seen under the outfit worn by the Klansman killed at Johnson's funeral.
As Cutt gets up after Breck swings him over a pile of suitcases during the fight, a mattress can be seen behind these suitcases, obviously put there for Cutt to land on.
As the hearse is reversing, a camera and at least one cameraman are briefly visible in the hearse's window.
There is no Atoka County in Alabama.