Police are appealing for witnesses after a serious road traffic collision in the early hours of Sunday morning (6 March).
A silver Mercedes was travelling along the A600 between Bedford and Shefford when it left the road and collided with a tree at approximately 2.40am.
Emergency services attended and the male driver was taken to hospital with life-threatening injuries.
The road was closed for several hours while recovery work took place and reopened at approximately 7.30am.
Anyone with information is asked to call Bedfordshire Police on 101 quoting reference number 028 of 6 March.