Hopefully someone else can chime in here, I sold my car last year in favor of public transportation. But there is a commuter train from Providence to Boston an

Hopefully someone else can chime in here, I sold my car last year in favor of public transportation. But there is a commuter train from Providence to Boston and it should arrive in South Station which is connected to the red line and only 3-5 stops away from south station. It may actually be cheaper/faster than driving. I don't know what time trains come back though. You will need to check on that so you don't get stuck in Boston.