I was thinking early today it would be cool if they got into a flooded town somehow. Broken dam or rising flood waters maybe.
This was filmed at Lake Havasu:
Gives you an idea of the layout, but they could certainly fictionalize the area to suit the story.
Force a few events and you could even flood Las Vegas, that'd be pretty wild and extra cheesy
My life fades. The vision dims. All that remains are memories. I remember a time of chaos. Ruined dreams. This wasted land. But most of all, I remember the cow. The cow we called "Bessie" To understand who she was, you have to go back to another time.