Its 18 minutes at the same station. Not that I would, but you could give it to a few close friends without it ever being an issue. You might need an additiona

Its 18 minutes at the same station. Not that I would, but you could give it to a few close friends without it ever being an issue. You might need an additional, non-unlimited card, for when you meet up with them some where in the city. I'm not sure whether MTA is smart enough to catch on to that or not.