The bad guys are driving their train when a cop train shows up in the mirrors behind their train.

Cop walks up to the window and asks for their license and registration please. Another shootout occurs followed by a multi-track multi-train police chase, but everyone needs to stay on their respective train tracks.

Then things go south. I mean really south, heading to the Mexican border.

On a little platform on wheels, with a see-saw type manual propulsion. And the police are waving their billy clubs and gaining on you!

>a cop train

https://i.pinimg.com/originals/e6/55/f9/e655f9c6ae124664ad5c...