Plot: Michael Portillo braves the awesome power and drenching spray of Niagara Falls in the Maid of the Mist to share what artists, daredevils and millions of tourists have billed as one of the most spectacular experiences on the planet. Continuing his American journey heading west through New York State, Michael has a lightbulb moment in Schenectady, when he discovers how Thomas Edison's General Electric Company also leads the way in modern rail technology