The baby was born aboard a packed train headed from New Jersey into Manhattan.
His mom thought she was experiencing false labor pain. Once on the train, the New Jersey woman and her husband realized the pains were contractions and that their son had already started to come out.
"When the contractions happened, I was told that you cannot talk or you cannot walk. But I could talk and I could walk," she said. "He has a personality of his own. He decided to come on and that was it. Nothing could stop him."
Dad turned into a midwife with some help from an elderly woman passenger.
Train officials turned the train into an express, bypassing most stops to get to the hospital, but the baby was delivered before officers could meet the train in Manhattan.
The first-time parents haven't named their son yet, but they've nicknamed him "Jhatpat," the Hindi word for fast.