Mr Gadget in his video ransom demand states he'll start demolishing buildings and he'll start with The Hall of Justice. The Hall of Justice is the home of the Justice League. Superman is a founding member of the Justice League.
At 10:10 Superman stops after losing control of his speed and creates double fire skid marks as he stops. This is likely a nod to Thomas F Wilson who played Biff tannen in all three Back to the Future films and features in this episode.