A man was taken to hospital after a vehicle was driven at him outside a pub in Swindon on Friday night.
The incident crushed his leg into a parked car outside the Spotted Cow in Marlborough Road just after closing time.
The vehicle involved is believed to have been a white Volkswagen Golf with a smashed rear windscreen, which did not stop at the scene.
Police say they 'are trying to locate the vehicle and the driver as a matter of urgency'.
Detective Sergeant Adrian Bray, from Swindon CID, said: "This victim in this case has been seriously injured as a result of being driven at in the pub car park just after closing time.
"It is believed that the victim and the suspect were known to each other and that this is not a random occurrence.
"We would urge any members of the public who were in the vicinity of the Spotted Cow at around 11pm, who saw any of the incident or saw the vehicle involved prior to, or after the incident, to make contact with the police as soon as possible."
"If you have any information to provide, call 101 and quote crime reference number 54190037631."