Thames Valley Police is appealing for witnesses following a road traffic collision on the M1 near Milton Keynes.
At around 10.34pm on Thursday (14/1), there was a collision between a white VW Tiguan and a black Audi A4 whilst travelling southbound between junctions 15 and 14.
One of the drivers, a man in his eighties, sustained serious injuries to his chest and is currently receiving treatment at the John Radcliffe Hospital in Oxford.
Investigating officer PC Alastair Jarratt of the Roads Policing unit based in Milton Keynes said: “I am appealing for anyone who witnessed this incident, or saw the vehicles described shortly before the incident to please get in touch.
“If you were driving in the area at the time, please check your dash-cam footage as you may have captured important information that could help with our investigation.
“You can make a report online or by calling 101 quoting reference 43210018437.
“You can also report anonymously to Crimestoppers by calling 0800 555 111.”