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>Some people who work in the city live in Pennsylvania.

That isn't really saying much. Easton, PA is almost exactly 90 min from NYC (though it has tolls).

If Easton was the only place from which to commute to NYC. And only if you drive yourself, and there's no traffic.

I'm talking about people who commute from Bethlehem - 180 miles away. Or from Oxford, CT - over three hours each way.[0]

Back in the 80's, NJ Transit had some bus routes that took a minimum of two hours (194, 195). I don't know if they're still running, though.