When working I travel widely in Europe as well as here and
Caravanning O F.
Our Satnavs are about the size of a pack of cards and fit in a shirt pocket. In a city or in the country we can wander wherever we want without a thought to where we left the car parked as its location is set when we park up in a strange location. At the end of our time you just fire it up and you can see where you are and where the car is. And remember all the POI's such as cafes, restaurants, museums, Sainbury's, Aucahn, post offices etc etc etc. They are all there in your hand and more for UK and Europe, you can also have a more detailed overlay similar to OS if you require it for walks in the hills or open country.
Whilst sat waiting for my wife to finish shopping there is also the talking books on it, MP3 player, Language translation or travel guide that can carry more than any guide book and then the machine will take you straight to the place you want or tell you how long it takes to get there.
A map book is a danger with many motorists trying to glanse at a map beside them or on their lap and then work out how many turnings thay have past so they do not miss there turn.
Many years ago I spent about an hour running on fumes at night as I tried to get to the only open Petrol station around one way roads and slip roads, in Antibes I lost the car the boat trip returned to a differnet place to the start and I'd had to park about two miles away and walk back to meet my family, by the ned of the day roads were closed due to some event and despite having the road name where I parked we could not find the small avenue on a map that we had to buy to find the car.
At the end of the day all roads looked the same and were packed with many different parked vehicles.
One of my daughters who has recently took to the roads finds that the speed cam warnings alert her to the "panic braking" motorists speeding around Yorkshire, she does not speed but has a warning of where the cameras are and is ready for those that zoom along and taka last minute panic actions with little thought for others on the road.
My uncle goes walking in Devon and Cornwall twice a month with retired friend/s. He is an ex outward bound and scout leader as is his friend, walking on the moors they have got disorientated and lost even with their OS maps and compass in bad weather. Their wives after they were lost on Dartmoor, and had to be collected near midnight miles from the car banned them from going out again unless they took a mobile and a satnav with the two wives deciding that one would get them a mobile and the other a Satanav suitable for car and walking.
On the road driving find the satanv is such a safety aid that I would not be without now and I can read maps of all kinds.
They played with the satnav for a long time but early last year got caught out by the waether with freezing rain and dense fog. Completely lost again with visibility at about 1 metre the satnav took them back to the side of the car that they could not see 3 metres from the car park entrance path to the moors.