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Convoys of driverless lorries are to take to Britain's motorways this year as part of a government trial aimed at cutting congestion and fuel consumption. The HGVs will travel in convoys, with a driver in the leading lorry. It's thought a relatively quiet stretch of the M6 in Cumbria could be the first location for the trial -- details of which will be announced in next week's budget. John Ironmonger reports. (Photo: a traffic jam on the M6. Credit: Â鶹Éç)