Motorists watched on as two men had a full blown fight in the middle of a motorway carriageway.
The incident occurred at around 12.45pm on December 9, when the drivers of a white Ford Escort Van and a Black Volvo V40 car became embroiled in what police described as a "road rage" incident on the M40 northbound near Bicester, between junctions 9 and 10.
The cars collided into the central reservation. The occupants of the vehicles then started a fight on the carriageway, with both men suffering minor injuries.
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Thames Valley Police said a 49-year-old man from Westminster, London and a 30-year-old man from Prescot, Merseyside, were arrested on suspicion of dangerous driving and assault causing actual bodily harm and questioned.
They have since been released pending further investigation. Thames Valley Police are now appealing for anyone who saw what happened to come forward.
Investigating officer, PC Craig Ridgley, based at Bicester police station, said: “We are appealing to anyone who may have witnessed this incident, or anyone who has dash-cam footage to please come forward.
“Anyone with information can contact police by calling 101 or making a report online, quoting reference 43220553832. Alternatively, if you wish to remain anonymous, you can contact the independent charity Crimestoppers on 0800 555 111 or online."
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