This program is an investigation of American transportation infrastructure from the past to the future, using Detroit as the narrative base for exploring this national story. Detroit has grown, flourished and fallen in accordance with the infrastructure choices we have made as a nation and, in Detroit's future, we can see a mirror of our national resolve. The expression "As GM goes, so goes the nation," has eerie resonance when what was once the country's largest company has gone bankrupt, but in the even larger realm of our national transportation infrastructure, it may well be that as Detroit goes, so goes our future.