Google Maps just became an even better sat nav

Google has given its Maps navigation app a little upgrade, with new heads-up notifications on what lane you need to get in to help ensure you don't miss that vital turn-off. Google Maps is a pretty good freebie sat nav already, but Google product manager Darren Baker has just let us know about this new feature in the service. Turn-by-turn navigation has been improved, with more sophisticated mapping data letting Maps tell you what lane you need to be in when turning off motorways and the like. S