Google Maps Street View gained a new feature on Wednesday: a way to travel through time. Street View has always offered time travel of a sort: Its images show the past. But now Street View can display multiple pictures of a place taken over a span of years. If you could actually travel to the past, your view of Street View would be different. Were you to travel back to 2007, for example, you might watch a Google Street View car drive past, unaware that it was capturing private data from open WiFi access points.