The only time my satnav was no good to me (not that I use it that often) was last year when I tried to use it to find Grizedale Hall (U-boat Hotel) but in fairness to it, Grizedale Hall is now a Forestry Commission Centre and probably goes by another name.
I also had fun with an earlier model shortly after the motorway modifications at Ferrybridge where the A1 links up with the M62....the bloody thing didn't know the motorway had been moved 1/4 of a mile and thought it was in a field
