Michael Keaton and Henry Winkler are talking on a NYC subway. The subway stops, the doors open, and Keaton gets up and says "this is my stop" and Winkler remains seated along with many other people on the train. The problem is they are on the Times Square-Grand Central shuttle! It only makes one stop back and forth and everybody gets off each time it stops. I guess they had an easier time shooting on the shuttle rather than the other trains.