Question 1) I am wonder normally how far a taxi services will travel. For example if you are in New York and take a Yellow cab or other standard taxi services normally how far will they travel. Are they allow to transport people out of the state , city , town ...? ( what is the normal extent of distance before they say forget it ) Question 2) In New York ,Boston , or Chicago ,...etc what is the distance that the subway can transport you from and to? For example can a New York or Boston subway ever transport out of a state. Or is it restricted to a location with in a state. What I am getting at is normally what the extent of a subway system is in the US in distance/area it can transport/cover?