An app or an integrated system: Which is best for car navigation?

HANDOUT - The accuracy of every navigation system stands and falls on how up-to-date its information is. In order to receive live services such as real-time traffic information about traffic volumes, construction sites or road closures, connectivity is always needed. Photo: TomTom/dpa-tmn

Just as there's more than one way to get from A to B, there's also different ways to navigate a route: Google Maps, mobile navigators or your car's intergrated system? Each has its own pros and cons. 

Thanks to Google Maps and the like, it's easy these days to work out the fastest route between A and B.