By John Keegan
Perhaps the writers were worried about the same thing, because the story is as much about Dean and his past as it is about the literal “monster truck”. I find it interesting and somewhat revealing that Dean would have little issue with a bi-racial relationship. It perfectly complements the fact that he perceives the true enemy as being the demonic entities that plague humans regardless of racial considerations.
Of course, that also allowed for some commentary on race relations over the years, which was a bit simplified for my tastes. If the area was so racially divided just a generation earlier, in that part of the country, the likelihood that bi-racial relationships would be tolerated is fairly low.