i think you're confused.I would think the interstate was more a necessity
massive interstate system is part of national defense and it took the Nazies to tell us that because of Constitutionalism...
WWII 1914 -1918
The Dwight D. Eisenhower National System of Interstate and Defense Highways (commonly known as the Interstate Highway System, Interstate Freeway System, Interstate System, or simply the Interstate) is a network of freeways that forms a part of the National Highway System of the United States. The system is named for President Dwight D. Eisenhower, who championed its formation. Construction was authorized by the Federal Aid Highway Act of 1956, and the original portion was completed 35 years later. The network has since been extended, and as of 2012, it had a total length of 47,714 miles (76,788 km),[2] making it the world's second longest after China's. As of 2011, about one-quarter of all vehicle miles driven in the country use the Interstate system.[3] The cost of construction has been estimated at $425 billion (in 2006 dollars).[4]]
So your inference would be that WWI precipitated the Interstate highway system .....
Nothing what-so-ever to with industrial revolution or mass production of automobiles, huh ??