Google knows many, many things about you, perhaps even that you can be a bit forgetful sometimes. To help you remember your plans, the company has started testing a feature that takes possible events from Gmail or other Google services and turns them into Google Now cards. For instance, if it infers that youre planning a day out based on an email thread, the new feature will automatically turn it into a card and will ask if youd like to add the event to your calendar.