Steam locomotives? Live steam?

The following picture, of course, is not live steam - it is a photo montage! In times of Gimp and Photoshop I could not resist to pimp my little N scale steam locomotive (as seen here on the main line of my layout). After inserting the "steam" (digitally taken from a real photo) I turned the result into a black and white mode, thus creating an ambience of the "good old times".....