A man was seriously injured in a crash on the A342 near Devizes, police say.
Emergency services attended a road traffic collision involving a grey BMW 3 series on Monument Hill, between Devizes and Wedhampton, at around 5.30pm on 27 December.
The driver, a man aged in his 40s, sustained serious injuries and was rushed to hospital for urgent treatment.
A spokesperson for Wiltshire Police said: “We would like to speak with anyone who either witnessed the collision take place, or possesses dash cam footage of the incident.
“If you can help, please contact us via our website or on 101 quoting reference 54230136862.”