A violent driver left two men "terrified" after he deliberately reversed his truck into a lorry and smashed a window with a spade in a road rage attack.
The dramatic incident, caught on CCTV, happened on November 9 at noon after two vehicles collided as they accessed a busy north-west motorway.
Footage shows two men in a large lorry and a man in a pick-up truck on the M62 in Eccles exchanging numbers on the hard shoulder, moments before the abuse started.
Wearing a yellow high-visibility all-in-one, the truck driver can be seen engaging in a heated exchange with one of the men before wrestling him towards the lorry.
He then reverses his truck into the lorry with such force that the contents of the truck's flatbed are sent flying backwards, before he tries to pull off the wing mirror.
In a dramatic conclusion, after trying to get into the cabin of the lorry with the driver and passenger locked inside, the man heads over to his truck and retrieves a spade before smashing the driver's window with the implement.
Police constable John Cavanagh, of Greater Manchester Police's roads policing unit, said it was an "unbelievable" attack and appealed for further information.
"Luckily, neither of the men were seriously injured, however they have been left terrified by the incident," he said.
"The driver and passenger in the lorry were just trying to get on with their day's work when they collided with the man in the pick-up truck. Accidents happen and they were attempting to deal with the situation in an appropriate manner.
"No one could have anticipated the level of violence they would then fall victim to.
"I am appealing for anyone who may recognise the driver of the pick-up truck to get in touch as soon as possible. It was broad daylight and the man can be clearly seen. Someone must know who he is."
Anyone with any information should call police on 0161 856 6108 or 101, or anonymously via the independent charity Crimestoppers on 0800 555 111.