When Timothy Olyphant enters the car with Jack Huston he says, "O ye fair ones, how could ye have departed from the ways of the Lord!" Is a direct quote from the Book of Mormon (Mormon 6.17). In the Book of Mormon this quote is given by a prophet named Mormon as he looks out on a battlefield where hundreds of thousands are dead, many of which are his own people. He says this essentially as his people are wiped from existence. Could be foreshadowing what is to come.
At around 6 minutes Loy Cannon (Chris Rock) whips Leon Bittle with a belt, much like Shep Proudfoot (Steve Reevis) does to Carl Showalter (Steve Buscemi) in Fargo (1996).