It appears that what saved the baby was the fact that he was strapped in the seat, which was pushed with the train to the end of the platform.
I am in Houston for a speech this morning and heard John Roberts on CNN this morning that the baby had been saved by God. That, of course, raises the inverse presumption that the babies killed by trains were sacrificed by God. His co-host had just repeatedly declared it “dumb luck” when the coverage took a divine turn where both agreed the baby was “in the hands” of the divine. Do you agree that such acts are evidence of God’s hand?