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A reckless BMW driver caused a four car pile-up while trying to undertake on one of the UK's busiest roads.
Despite packed traffic on a four-lane stretch of the North Circular in London, the BMW swings across three lanes of the road and smacks straight into the back of another vehicle.
Shocking footage shows the dramatic smash as a vehicle is forced into the barrier on the left hand side of the road.
The speed limit on the A406 near Woodford is 50mph but it is thought the BMW driver could be doing in excess of 70mph as he was undertaking.