A New York state of mind

Some folks like to get away
Take a holiday from the neighborhood
Hop a flight to miami beach or to hollywood
But I'm taking a greyhound on the hudson river line
I'm in a new york state of mind
Seen all those movie stars and their fancy cars and their limousines
Been high in the rockies, under the evergreens
But I know what I'm needin and I don't wanna waste more time
I'm in a new york state of mind

Ruoying chose this song at the ktv last night and to my surprise, i know it well enough to sing a long =p
I have wondering though, what is the new york state of mind, and what was billy joel thinking about? I always thought I was an urban chick, but after 5 months in this city, I am quite exhausted already, and am starting to appreciate the appeal of suburbia =p someone buy me a farm!!!