A car towing a caravan drove the wrong way up the M40 before crashing on the carriageway in South Oxfordshire.
The incident was captured on another vehicle's dashcam near Watlington, in south Oxfordshire. Witnesses claimed it was driving up to 60mph.
West Oxfordshire councillor Colin Dingwall told the Oxford Mail he had to swerve out of the wayward driver’s path.
"I've seen a lot of things in my 50 years on the road, but I've never seen a caravan coming the wrong way up the M40," he said.
Liz Hindmarsh tweeted: “My husband had to swerve into the middle lane otherwise he’d have been hit by the caravan travelling the wrong way down the M40 in the outside (fast) lane.”
Emergency services were called to the scene after the car collided with two vehicles between junctions six and seven.
Thames Valley Police said the collision incident happened just before 4pm and led to closure on the northbound and hours of tailbacks on the southbound.
A spokesperson for the force appealed for anyone with dashcam footage of the accident to contact the police.
“At just before 4pm today the force received reports of a car towing a caravan travelling in the wrong direction on the northbound carriageway of the M40. The Force received reports of a car towing a caravan travelling in the wrong direction on the northbound carriageway".
They added: "We would urge anyone with footage of the collision, or of the car towing the caravan to contact police as soon as possible."
All the vehicles involved were recovered around 11:30pm and emergency resurfacing works were completed at 05:00am.