Maybe you're right. Although they're rare, there is certainly precedent for private roads, and many of these are successful. For example: "The Dulles Greenway is a private road built in the western suburbs of Washington, D.C., in 1995. Though constructed with some restrictions set by the state, it was built with private money and is run as a for-profit business. The first year it opened, 6.1 million trips were made on the road. In 2006, 21 million trips were made. This type of private toll road has the ability to move large numbers of people without the aforementioned problems associated with the federal interstates that we are told are indispensable. It has shown its viability, and we might well be seeing many more of these private toll roads in the future." See http://www.fff.org/freedom/fd0809d.asp