Tony Hawk's Underground Easter Egg - Special Thanks from the Creators

In New Jersey, go to the train station. Under the staircase you will see a newspaper machine. on the bottom of it there are newspapers that say MISSING and a picture of a person on there. Right above there there is an orange-yellow sign saying "thank you for riding our rails" although this may seem like a message to the train station the term "riding our rails" means grinding. So they are basacally saying thank you for playing this game.