Dramatic dash cam footage shows the moment a large container separated from an HGV and narrowly avoided hitting drivers on a busy motorway.Motorist Christine Luff captured the heart-stopping incident while driving on the M25 motorway just outside Potters Bar in Hertfordshire on April 22.The 69-year-old from East Hunsbury in Northamptonshire was travelling on the busy road with her 89-year-old mother when the trailer carrying the 20-foot container became detached.
