VIDEO: Reckless drivers race each other on a busy motorway

This footage shows two reckless drivers race each other along the M50.

The shocking incident was recorded by a dashcam on the southbound lanes last Friday.

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A silver-coloured Volkswagen and a white van can be seen speeding near the Finglas exit.

The vehicles threaten to side-swipe each other a number of times - as other motorists drive alongside.

Both cars then overtake a lorry before racing down along the left lane, again almost knocking into one another.