It’s understood the man was driving his grey Seat Leon on the Crossgar Road in Saintfield, Co Down at around 8 pm when his vehicle was struck from behind by another car forcing him to pull in at the roadside.
The driver of the car was then threatened by two males and his Seat Leon set alight.
The incident occurred on the Crossgar Road in an area between Junction Road and School Road.
Detectives are appealing for witnesses to get in touch with them.
The number to call with any information is the new non-emergency number 101.