<Tr> <Td> </Td> <Td> This section needs expansion . You can help by adding to it . (December 2010) </Td> </Tr> <P> On August 27, 2007, Google introduced Google Sky, an online space mapping tool that allows users to pan through a map of the visible universe, using photographs taken by the Hubble Space Telescope . </P> <P> Google launched an experimental Google Maps - based tool called Ride Finder, tapping into in - car GPS units for a selection of participating taxi and limousine services . The tool displays the current location of all supported vehicles of the participating services in major US cities, including Chicago and San Francisco, on a Google Maps street map . As of 2009 the tool seems to be discontinued . </P> <P> In 2007, Google Maps began offering traffic data in real - time, using a colored map overlay to display the speed of vehicles on particular roads . Crowdsourcing is used to obtain the GPS - determined locations of a large number of cellphone users, from which live traffic maps are produced . </P>

What we see when we open google maps