Two major American cities are embarking on large capital programs, but in very different ways. Boston Mayor Thomas Menino has a $1.8 billion, five-year plan that he will fund with municipal bonds, while Chicago Mayor Rahm Emanuel is trying to push a $7 billion plan, which will be paid for by private investors, through the city council. It would be hard to find to two more dissimilar approaches to rebuilding America’s urban infrastructure or two more different lists of who will reap the monetary benefit of the improvements.