The nation's transportation experts have identified their top three priorities: a national freight network, urban congestion and connecting new urban centers with the interstate system. The American Association of State Highway and Transportation Officials, meeting in national conference last month, heard futurists predict that the cost of meeting the transportation needs would be $3.1 trillion over the next 25 years. State and local governments are turning to "public-private partnerships," or PPPs, to produce the funding. The city of Chicago was happy to partner with a Spanish-Australian group that paid $1.83 billion for a 99-year lease to operate the Chicago Skyway....