All lanes were re-opened this just before 2pm. The incident occurred at junction 23, opposite the Marriot hotel, caused a lane to be blocked back to junction 21 of the A1 at Brampton Hut. Police and fire crews were called to the incident at 11.48am this morning to reports of a car fire involving a grey Peugeot 407. Smoke and flames were seen coming from the car that was on the eastbound carriage. Two fire crews from Huntingdon attended and managed to put the fire out by 12.31pm. According to Cambridgeshire police all passengers were out of the car. The cause of the fire was accidental.