I will quote my favorite comment on this video, posted by TrainTrackTrav:
Voice of David Attenborough: As the spring begins, so does mating season for the wild AC4400CW. His lonesome mating call can be heard in the railyards across the country, as he hopes to find a partner for the season.

P.S. Can someone at JR recreate this horn and put it on one of your models?