I would go for wide DOF. You have now everything in focus. That rail on the right drives my attention away from main subject.
Leave rails on the left where you have you tram visible and move all the debris and things to the right to create a foreground element to add more perspective.
Yeah, but i dont think we modeled the same “My” tram was used here in Bratislava in years 1935-1970 and it was build based on Ganz Cmg and its called BMEZ (Bratislava urban electrified railway). You can spot the difference at the front part. BMEZ has almost right angle between front and side and your looks like it has smaller front part and more angled side. Now back to your artwork.
Your artwork is missing sun. Add sun to the scene and reduce the intensity of your hdri. Sun will help you create mood and also god rays throught the windows. Sun should be your primary light source.