So here's the work in progress on texturing the train car both exterior and interior. 70 % of the job is done just need to add more smaller detail, dirt rust and create the specular map. I had to repaint the normals in few places and add some new stuff to the map in photoshop. There will be also a decal pass at the end of texturing. The texture sheet for that is already done just need to finish this stage and then I can just create additional geometry and map the existing decals.
Here are some screenshots.