After 80 years, New York's Second Avenue subway project is finally under way. War, depression and near-municipal bankruptcy have plagued this project from the beginning, but updating a subway system in America's most densely populated city is no small feat. The FT's Christopher Booker reports on how the city's transport challenges reflect many of the larger questions facing the United States
For more video content from the Financial Times, visit http://www.FT.com/video
