The following is a link to a killer pic you can't pass by: http://www.railpictures.net/viewphoto.php?id=185180 THREE diesels in Belle livery- an FP9, SD70MACe, and an ES44AC (KCS,KCS, KCSdeM respectively) under the pedestriam walkway at Union Station in Kansas City, MO.
You can believe they were prettied up for this shot. Of course, this is also a busy route, so trains were tied up at either end of Union Station while KCS did the shoot. Also, note the pedestrian overpass- it's open to folks to walk out over the tracks & see trains as they pass below. Pretty cool, eh?