What train did people use to travel to Hooterville on the TV shows, "Green Acres" and "Petticoat Junction"?

On the TV shows, "Petticoat Junction" (1963–70) and "Green Acres" (1965–1971), Charley Pratt and Floyd Smoot, were the engineer and conductor, respectively, of the local train, the Hooterville Cannonball. This is the specific train that people would use to travel to the fictional farming town of Hooterville.

The Hooterville Cannonball train was considered a distinctive feature to use and highlight on a television show. It was an abbreviated steam-driven train that was run more like a taxi service by two handy engineers. It was not uncommon for the men of the Cannonball to make an unscheduled stop in order to go fishing or pick fruit for Kate Bradley's menu at the Shady Rest Hotel. Occasionally, Betty Jo Bradley could also be found with her hand on the Cannonball's throttle. She would be driving the train home from trips into town; it was one of her favorites things to do as a pastime activity.