America's Highways Had a Secret PurposeThe interstate system was also a nuclear escape plan.

From the show

Hidden Sides of History

The US interstate highway system is more than a network for commerce and road trips. Conceived during the height of the Cold War, its primary, lesser-known purpose was to serve as a mass evacuation route in the event of a nuclear attack on major cities. This civil defense strategy, championed by President Eisenhower, re-frames the familiar roads we travel every day, revealing a hidden layer of Cold War anxiety and survival planning built directly into America's infrastructure.