Officers are trying to locate an Uber driver who was at the scene of a collision in Willes Road, Leamington Spa at around 2am on Sunday 13 March.
An 18-year-old man from Leamington was arrested on suspicion of drink driving following the collision.
The Uber driver may have information that could help with the investigation.
Anyone with information that could help with the investigation is asked to call 101 quoting incident 35 of 13 March 2022. Alternatively, information can be provided anonymously to the independent charity Crimestoppers on 0800 555 111.