The writer only gets partial credit. No Amish. That could have been tied into the cult. High speed cross country buggy chases.
And now that I reflect some more, no Steampunk, either. The 10th Century vikings needed steam powered airships.
LOL!
Q: What do you call: "Clip-clop, Clip-clop, Clip-clop, BANG BANG! Clip-Clop, Clip-clop, Clip-clop" ??
A: An Amish drive-by shooting.
I noticed that the Amish are about the only honorable white people in any movie, including survivalist movies. Even Amazon Prime’s “Aftermath” had liberal white suburbanites saving the simple Amish rip offs.