This is my personal digital painting work done few years ago. It is my concept of a subway/metro train for mumbai. The CST stands for 'Chhatrapati Shivaji Terminus'. The entire work was created using Adobe photoshop.

Below is a gif animation showing the layer breakdown.

Some closeup shots of the painting. The CST wording was done in 'Airport' font.

There were several layers, and I had used a combination of drop shadow and bevel embossing for some of them.