Time estimate to location in Today's view? I found an article (can't remember where) that there's an option to show time estimate of arrival at a location in the Today's view, with regards to traffic too. 

How do I enable this option ?
I presume you are referring to the following section:




To enable, you need to go to Settings → Privacy → Location Services → System Services and turn Frequent Locations on. Then go to Settings → Notification Center and turn Next Destination on.