Police are hunting a man over a rush-hour road-rage attack on the hard shoulder of a motorway.
The incident happened close to junction three of the M56 in Wythenshawe, south Manchester.
The drivers of a red Ford Fiesta and a dark Volkswagen people carrier pulled up after a minor collision and began to argue over whose fault it was.
A passenger from the people carrier then got out and sprayed an unknown substance into the face of the Fiesta owner, which temporarily blinded him. He tried to defend himself, but was hit in the leg before the men drove off.
Police describe the driver as white, aged in his 30s and around 5ft 8in. He was wearing a grey T-shirt and tracksuit bottoms.
His passenger is also white, in his 20s and about 5ft 9in. He was wearing a red Ralph Lauren Polo T-shirt during the incident, which happened at around 5.30pm on Tuesday April 5.
Pc Kate Patterson, of Greater Manchester Police, said: "The attack took place just a few yards away from the inside lane of the motorway during rush hour, and it is lucky the victim was not permanently injured.
"We believe a number of motorists saw the altercation as the victim said they were sounding their horns as they passed and I would urge anyone who may have seen something to contact us."