Two people have been arrested after a 41-year-old man was attacked in a street in Blackpool.
The man was punched in the head in Caunce Street, at 0420 BST on Saturday. He fell to the ground and suffered serious head injuries.
Police said the attacker had jumped out of a car which pulled up beside the victim.
A 32-year-old man and a 26-year-old woman were both arrested and were later released on police bail.
Police said the man was arrested on suspicion of causing grievous bodily harm and dangerous driving.
The woman was held on suspicion of assisting an offender.
The victim remains in a serious condition at Blackpool Victoria Hospital.