Were you driving on the M1 between junctions 33 and 34 on Friday 21st June?
At around 4pm there was a crash between a white lorry and a black Honda Civic.
The lorry, driven by a 43-year-old Swallownest man, was travelling southbound.
It is thought that while changing lanes, the lorry hit the black car.
The Honda driver, a 33-year-old man from Woodseats, Sheffield, was treated for whiplash at Rotherham Hospital.
Police want to speak to anyone who saw the incident.
They are especially keen to hear from the driver of a white Mini who may have seen the crash but left the scene before police arrived.
Anyone with information can call South Yorkshire Police on 101 quoting incident number 784 of 21st June 2013.