Several people have mentioned Google Now mining their email for flight reservations. I've seen that, but recently saw a new twist: it wasn't me flying but some

Several people have mentioned Google Now mining their email for flight reservations. I've seen that, but recently saw a new twist: it wasn't me flying but some friends coming to visit me who had forwarded me their details. Google Now put up a card for their flight, and labelled it with them as passengers, meaning it had distinguished between a reservation for me and one for them. Then the next day, along with the weather card for my town, it showed one for theirs as well. It had recognized that I picked them up. Another story, this time where I was the one visiting: after spending a night at friends, Google Now added a card for directions and driving time back to what it called "Unknown location." From my location info, it surmised I was staying at that place and was offering directions back. Being in a foreign city, this was actually very useful. Creepy, yes, but useful.