Eisenhower's Inspiration for the Interstate... (Score 1)

... more likely came from his work on the Lincoln Highway: {from http://www.fhwa.dot.gov/interstate/links.htm scroll down}

One of the pivotal events in President Eisenhower's early years in the U.S. Army was his participation in the Army's first transcontinental motor vehicle convoy across the country. The vehicles left Washington, DC, on July 7, 1919, drove to Gettysburg, Pennsylvania, turned west onto the Lincoln Highway, and remained on the named route the rest of the way to San Francisco -- where, that is, scouts could find the highway. The convoy reached the West Coast on September 6.