Bug
Due to a bug in the game the player can visit the location, called "the" after the location description "You are in the", used for objects that are not created or have been destroyed. The way to get to the is to sit in the cab and tell the cabbie to move away. The game interprets this as you are going away from the cab without paying and the cabbie will get upset and go away (to "the") taking the cab with him (with you inside).
Read more about this topic: Sherlock (video Game)