The Pennsylvania Turnpike is one of the best-known highways in the United States. Most Pennsylvania Turnpike travelers are unaware that its construction was inspired by the route of the never completed South Pennsylvania Railroad. In the 1930s, men of great vision conceived, planned, and built the nations first long-distance superhighway using the abandoned railroads partially finished tunnels as its foundation. Originally predicted to be a financial failure, the project was a tremendous success, and the turnpike came to be known as the Worlds Greatest Highway. Over the years, the...