Arrest: The defendant was arrested after driving along the M6 in north Cumbria A CARLISLE motorist has been sentenced for driving on the M6 while unfit through drugs. Paul William Heritage, 57, appeared before District Judge John Temperley today at the city's Rickergate court. The defendant admitted committing the offence on the evening of September 23 last year. The court heard that police who were patrolling the M6 motorway north-bound became aware of a white Nissan Duke car that was seen moving from lane 2 into 3 and then back again over a three mile distance. The car then left the motorway at Junction 42, after which the officers stopped the car at about 10.30pm.