Grungy HDR is a lot of fun and once in awhile I have some free time (rare) to open images and just play. I took this shot in Nevada City Montana a few years ago after a workshop up there. It was one of many I shot in the NC area which is a gold mine (no pun intended) of historic buildings and artifacts from the mining days.
This old railroad car sat next to an old locomotive and a few other old cars. They were rusting and had peeling paint, and that makes them perfect for HDR or B&W with Sepia tone, or……? Let your imagination run wild.
The key to grungy HDR is Tone Mapping more than once and then what I have enjoyed doing is converting to B&W with Topaz B&W Effects and then using the Adjustment Brush to bring back color. What do you think?