dowload WAZE from the AppStore, it is the best thing (and free). It uses crowd sourcing so once you log in you share info with all the other users eg if there is a traffic jam on your route it knows because the speed of the Wazers in that area is way slower than it should be and shows you alternatives. Everyone can also mark where the speed cameras are hiding so you get a warning before you get there as well as a host of other things. I use it all the time and it also got me thru a double or nothing demerit point sentence. At the time I was driving a supercharged V8 Range Rover Sport so....
