Do you use a GPS on holidays by bike

[Grahamm]

No one is caning you Robbo, but remember the Sat Nav only needs to be wrong once 

That's why you don't *rely* on it, just use it as a potential useful extra piece of information.

There again, it's cheaper and easier to download an updated map on the Sat Nav than buying a paper one which might be based on information a few years out of date...