Hello @MK_Piano!
Yes, that’s really a good swinging big band piece which immediately reminds at Glenn Miller’s „Chattanooga Choo Choo“.
Good old steam trains seem to have inspired many composers and musicians because of their „sound“ which comprises „rhythmic“ elements (the start of the locomotive, increasing and decreasing speed, the rattling noise when driving over the track joints) and melodic elements (the puffing of steam, the whistling of the locomotive, or the squeaking of the wheels when braking) which animate to be imitated musically. Who would write a piece inspired by the noises a nowadays train produces?
Another good example of a piece dedicated to a steam locomotive is Arthur Honnegger's “Pacific 231”, which is not a jazz piece, but rather a dramatic symphonic work.
I liked it very much and I must say that the repetitive character mentioned by @PeterthePapercomPoser didn’t bother me, especially taken into account the purpose of the piece as soundtrack for a movie where it does not appear in its entirety but is cut into parts to underpin the individual scenes. Or whenever it would be played in a bar as the background music, the most visitors would not even notice it.