when driving I rarely manage to get across London without taking a wrong turn. I would love to have a sat nav system of my own to help me get back on track. They are also very useful to tell you where you parked on long roads in Bordeaux or remote parts of Scotland, just pinpoint the position when you park, and then you can easily get directions back to where you were.

The only problem is when roads are closed and the sat nav insists that you use the road. I have found myself with absolutely no sense of direction in small villages, completely unable to do anything other than what the sat nav says to do.