I seem to recall using wifi on the Moscow metro two years ago, and not just the stations, but the trains.  Granted, some of the lines are still running cars that were made in &quot;Leningrad&quot; in the 70&#x27;s, but...I mean you&#x27;d expect NYC trains to be made of castable diamond and levitating two inches above the rails by this point, so it&#x27;s surprising they&#x27;re still catching up electronically.