I'm with Ramblingboy here. Before leaving I study google maps, print out a couple of necessary pages and I carry a street directory in my car.
If you travel from Melb to my place a satnav will unnecessarily send you about 5 kays along a dirt road with some bits a goat track.
50 metres from my place is an intersection. Over the other side of this the road is often incorrectly named by a lot of these machines.
If I want to go to "Crash's" place from mine I type in his address and it directs me there along a dirt road, when it can be done on bitumen with no further distance.
Now dirt does not worry me in the disco, but Crash's next door neighbor drives an SS Commodore and he does not want to drive on dirt.

