WordNet (r) 3.0 (2006):

information superhighway
    n 1: an extensive electronic network (such as the internet) used
         for the rapid transfer of sound and video and graphics in
         digital form [syn: superhighway, information
         superhighway]

The Free On-line Dictionary of Computing (30 December 2018):

information superhighway
information highway
superhighway

    (Or "Infobahn", "Info Strada") The name
   coined by US Vice-president Al Gore in the early 1990s for the
   emerging high-speed global communications network capable of
   carrying voice, data, video, and other services around the
   world.  These services use satellite, copper cable, optical
   fibre, mobile telecommunications, and are accessible via
   set-top boxes or suitably equipped computers.

   See also National Information Infrastructure.

   (2001-03-31)