These pages don't quite present the National Railway Museum's collection in chronological order (neither does the museum!). Here's a technologically (if not physically old) "Dandy" car built in Edinburgh, Scotland. No locomotives were used here -- a single horse would pull one of the four Dandy cars. Service started in Port Carlisle (northwest of York) in 1863. Steam engines replaced the horses in 1914. I imagine that the sets at either end allowed the driver to swap the horse to the other end of the car and reverse directions instead of turning the car around on the tracks.