Park Stroll Goes Awry

A friend and I were in a park, strolling alongside a creek somewhere near Denver when we spotted a railroad track of sorts running zigzag across the slope on the other side of the creek. Eventually, we encountered a small train lugging an open-air car of seats, like the kind you see in amusement parks. The train was empty except for a man driving it, who called out to us, "Hey, would you like a ride? There's a snack shop that I run at the end of the way."