The sleepy village of Exton in Hampshire has scored a world’s first, by erecting an old-fashioned painted-metal road sign that is considerably smarter than a state-of-the-art computerised satellite navigation system. The sign warns that a lane through the village is narrow - very narrow - and will not provide the quickest route from Winchester to Havant even if the satellite navigation thinks it does.

As the many stuck lorries and reversing vans have proven, a little knowledge is a dangerous thing, and until the dumb little boxes on the dashboard learn to plot which roads have grass down the middle, matters will only get worse. Already, more and more drivers are trusting their satnav and ignoring the road signs that used to funnel traffic onto long-way-round bypasses, and instead are ploughing straight through market towns and villages on routes that offer the shortest journey time (as long as you’re thin and riding a motorbike, rather than fat and driving an articulated lorry).

It can only be a matter of time before irate residents of once-peaceful hamlets begin installing GPS-jamming technology. Apparently the satellite signals are rather weak, so a device the size of a tin of beans, broadcasting noise at the right frequency, can smother GPS signals over several square miles.

Sneak’s advice is to avoid the whole moving-from-place-to-place thing. It’s not worth it.