Isn't this movie like making a film about World War II where the main characters get captured in the first few minutes, spend most of the film in a POW camp, escape to Switzerland, and then someone says, 'D-Day, atomic bomb, the good guys win.'?
I think there is potentially a fun film here if you just make the main characters people who aren't dummies trapped at a truck stop. Let's see the people who figure out what's going on, find the UFO, get politicians to work with the Russians, etc. That seems like a much more interesting film.
Either that, or like the hosts said, do this as a play with all of the machines and violence off-stage. So it's sort of a Waiting for Godot thing where the characters talk about what is the definition of a machine and who made who. :-)