When I lay in bed at nite & hear the train clacking down the track. "Clack-clack. Clack-clack" I grew up in Detroit & could here the Grand Trunk at Mount Elliot & McNichols, even though I was at McNichols & Gratiot. We had no air-conditioners, only open windows & the nite breeze. It is such a peaceful sound. It would last a few minutes and then be gone. You would wonder what freight it was carrying, where was it headed? You would fall back to sleep before you could answer the questions.