Even around midnight, the bustling city streets are still vibrant. Look around, and you'll see couples who have had a bit too much fun on their date after work, missed the last train, and are now pondering how to get home. "Good evening, couple," "Oh, did you miss the last train?" "If you don't mind," "It just so happens we're heading the same way," "If you don't mind," "We'd like to share a taxi with your precious girlfriend all the way home."