Internet vs information superhighway

Internet

noun
  • specific internet consisting of a global network of computers 

name
  • The specific internet consisting of a global network of computers that communicate using Internet Protocol (IP) and that use Border Gateway Protocol (BGP) to identify the best paths to route those communications. 

information superhighway

How often have the words Internet and information superhighway occurred in a corpus of books? (source: Google Ngram Viewer )