I have had a sat nav for some time as I can get lost in a room with more than 1 door. But although I have set it up for places I know, I have never used it to find my way somewhere different. Today I am taking a friend to a hospital about an hours drive away. I have only a very vague idea of where it is. So today I am relying on my sat nav 100%. As I know it might take me on a totally different route to usual, this is a leap of faith. But at least I have home keyed into it, so no matter what we will get back again. Even if the route is slightly eccentric.