A driver has been arrested following the death of a man in a motorway crash.
The northbound section of the M40 in Oxfordshire was closed for about 11 hours after the collision, which involved a beige Nissan Qashqai and a white Tesla Model 3, between junctions 8A and 9 at about 06:10 GMT.
A 30-year-old man, from Kent, died at the scene.
A 39-year-old man has been arrested on suspicion of causing death by dangerous driving and remains in police custody.
Police, paramedics and firefighters were called to the stretch of carriageway, which is expected to remain closed until mid-afternoon.
Thames Valley Police has appealed for witnesses, or anyone with dash-cam footage, to come forward.
The man's next of kin have been informed and are being supported by specially trained officers, the force added.