In S1E16, Dean takes Rory to a junkyard and she asks nervously, “Dean, what is this?” He replies, “Okay, uh, did you ever see ‘Christine?'” Rory, unamused, says, “Yes.” Dean laughs, “Well, it’s nothing like that. Come on!”
“Christine” was a 1983 film by John Carpenter based on a Stephen King novel. The story is about a sentient, self-repairing car named Christine which exerts an influence over its teenage owner, Arnie, and together they murder several people.