"To all those who compare the sounds of a steam locomotive to a symphony, there actually is a symphonic piece from the 1920's by Arthur Honneger that attempts to capture the power and speed of a steam locomotive... It's entitled "Pacific 231."
That's a pretty good interpretation for a symphony, but, Sly and The Family Stone's "I Want To Take You Higher" conveys the sheer power of those N&W articulateds heading upgrade!