Motorists have been advised to be extra vigilant when the clocks go back as extra hours of darkness during the winter months will give car thieves more opportunities to steal. Figures released by Tracker show that 20% more stolen vehicles are recovered during winter. Stuart Chapman, the firm’s police relationships manager, said: “Our figures confirm that the winter’s extra hours of darkness allow more time for thieves to break into vehicles unseen, with November, January and February being the worst months. “In 2010, 84% of all the stolen cars recovered by Tracker were taken using the owner’s keys and this danger increases during the winter.  More