Thames Valley Police is appealing for witnesses to a road traffic collision in Milton Keynes.
A black Mercedes-Benz EQE 300 and a silver Volvo S40 were involved in the collision on the H8 Standing Way dual carriageway in Woughton-on-the-Green at around 10.20pm on Wednesday (10/5).
The Volvo driver, a man in his thirties from the Volvo, suffered serious, life-changing injuries and was taken to the John Radcliffe Hospital in Oxford for further treatment, where he remains in a critical condition.
The Mercedes driver, a man in his fifties, also suffered serious injuries and was taken to the John Radcliffe Hospital in Oxford for further treatment, where he remains.
No arrests have been made.
Investigating officer PC Christopher Ruvolo-Jones, of the Joint Operations Roads Policing Unit, based at Milton Keynes police station, said: “I am appealing for any witnesses to this collision, whereby two men have sustained serious injuries, to please come forward.
“Also, if you were driving in the area around the time of the collision and have dash-cam, I’d also ask that you check any recordings in case it has captured something that could assist our investigation.
“You can upload any footage to our dedicated online portal.
“The Mercedes is believed to have also hit parked vehicles in Monkston Park before the collision with the Volvo, so anyone with information or footage of that should also please contact us.
“You can do so by calling the 24-hour non-emergency number 101 or by making a report on our website, quoting reference number 43230204132.”
