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The Interstate analogy was used to encourage the adoption of the Internet.

Al Gore Senior "was instrumental in sponsoring and enacting the legislation creating the Interstate Highway System". https://en.wikipedia.org/wiki/Albert_Gore,_Sr.

Al Gore Junior, the former US vice president, "promoted legislation that funded an expansion of the ARPANET, allowing greater public access, and helping to develop the Internet". https://en.wikipedia.org/wiki/Al_Gore_and_information_techno...

Al Gore certainly saw the parallels with what his father had done, and the "information superhighway" phrase was a direct reference.