Metro Train Escape

Today you, as usual, woke up, packed up and went to the subway to take the job. I came the train and you went inside. You will be surprised, because all the cars are absolutely empty. The train went, but stopped in the middle of the tunnel. The light was turned on, but the doors are closed and you can not leave the wagons. You can move between the cars through the office door. Use this feature to open the main door and leave the train.