SIR - I was driving into the city the other day and was surprised to see how many car drivers were using their sat-navs.
A lot of these drivers must know where they are going.
I own a sat nav myself and yes it's very useful when you are going somewhere you don't know but come on, if you can't find your way from home into the city you really are a sad nav.
John Hodgetts, Lyppard Hanford.
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