Google Map is very useful. No need to ask anybody about routes if you have Google map. All smartphone have google map inbuilt nowadays. I use it often while traveling. It provide all information about routes which is faster and safer. Voice navigation system is very nice and helpful. You can see satellite views too. It show your phones current location. No need to worry about routes while traveling even in rural areas. Design is very simple and easy to use. Overall its very useful and helpful invention.