Luckily, they have a kick-ass subway.
Out of all the transit systems I have seen in big cities, NYC was the worst. (Of the BART, DART, and the Underground). The maps were confusing to anyone not experienced with the system, the mixing of the in and out points actually led to me being stuck (because some guy ran up to the gate right as I swiped my card, locking me from using the card there again), and there was no status boards that I saw about train arrival time ETAs and such.