I hear that train a comin’
From Obama’s speech in Philadelphia, before boarding the train to Washington.

…we should never forget that we are the heirs of that first band of patriots, ordinary men and women who refused to give up when it all seemed so improbable; and who somehow believed that they had the power to make the world anew. That is the spirit that we must reclaim today.
For the American Revolution did not end when British guns fell silent. It was never something to be won only on a battlefield or fulfilled only in our founding documents. It was not simply a struggle to break free from empire and declare independence. The American Revolution was – and remains – an ongoing struggle “in the minds and hearts of the people” to live up to our founding creed.
Starting now, let’s take up in our own lives the work of perfecting our union.
Let’s build a government that is responsible to the people, and accept our own responsibilities as citizens to hold our government accountable.
Let’s all of us do our part to rebuild this country.
Let’s make sure this election is not the end of what we do to change America, but the beginning.