The incident happened on Monday night between Woburn Sands and Wavendon.
Following the incident earlier this month, another driver has been stabbed in MK.
Earlier in July, MKFM reported how a taxi driver was stabbed and robbed in Pinder's Croft, Greenleys. The driver had picked up three or four men who proceeded to hit him in the face with a metal bar, smash the car windows and then stab and rob him.
If you have any information on either case then the police ask you to contact them on 101 or anonymously via crime stoppers on 0800 555 111.
