Where is the smoke coming from
I hope that I am not mistaken about this: toward the end of the movie, when "How deep is your love" is playing, the WTC towers are being shown and it is twilight, a certain kind of smoke fills up the horizon. I've never been there: where is that smoke coming from? (Maybe early dawn, fog, etc?)
I am also not sure how Tony got the address of Stephanie (Stephanie is surely not the kind to giveaway her home address that easily, lol) but that is a question for another day.