The cat and the dog are out riding the rails when they encounter some trains out having a good time.
This early Paul Terry-Aesop's Fables cartoon is a fairly good effort, albeit the version I saw ran a bit short. The cars in the train are given a bit of action and personality.
The whole effort is bolstered immeasurably by the lively score of Michael Mortilla, best known for his work on the CHAPLIN AT MUTUAL DVD. It's jazzy score with some nice sound effects attached and if you like, you can see it on his website at http://www.midilifecrisis.com/HTML/NFPF_Frameset.html.