I also have a question. I have been virtually searching Boston as I used to travel there but cannot recall which stations came along as I rode the subway. Will gps help with this? I noted not all stations are listed, and I cannot get it to do them for a specific line ex. Red line, green line etc. Is this possible? What will happen when I'm riding on the subway with gps on? Will it list stations or will they not come up at all? Karen and Harpo