Do you get a quiet sense of satisfaction in deviating from the route recommended by your satellite-navigation device and ignoring its bossy voice as it demands that you "make a u-turn" or "turn around when possible"? A satnav's encyclopedic knowledge of the road network may justify its hectoring tone most of the time, but sometimes you really do know better. The motorway might look like the fastest way but it can be a nightmare at this time of the day; taking a country lane or a nifty shortcut can avoid a nasty turn into heavy traffic; or sometimes the chosen route is simply too boring.
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