progress, like so many other things within time, can get swept under the rug feeling inconsequential. i enjoy the moments while traveling that stop in my tracks...haha 'tracks'...to notice the grandeur of humanity. i dunno...maybe im just feeling a typa way from the inauguration, but this moved me. I love this piece for its size, content and its location. This towering relief resides within 30th Street Station in Philadelphia, entitled, "The Spirit of Transportation" the piece "is represented in triumphal procession of progress led by a little child carrying a model of an airship, a prophetic vision of a mode of transportation to come."