Book excerpt: The year 2006 celebrates the 50th anniversary of the U.S. Interstate System, the most incredible road system in the world. Created by Dwight D. Eisenhower, whose WW II experiences taught him the necessity of a superhighway for military transport and evacuation in wartime, today's Interstate System is what connects our coasts and our borders, our cities and small towns. It's made possible our suburban lifestyle and caused the vast proliferation of businesses from HoJos to Holiday Inns. And if you order something online, most likely it's a truck barreling along an interstate that gets the product to your door. Written by bestselling author Dan McNichol, The Roads that Built America is the fascinating story of the largest engineering project the world has ever known.