TWO women suffered serious injuries when their car smashed into a tree while trying to avoid another driver, who drove off without stopping.
The women, believed to be a mother and daughter, had to be cut free from their Ford Fiesta after the crash in Bank End Road, Finningley, on Wednesday afternoon.
A police spokeswoman said their car left the road when it swerved to miss another vehicle emerging from a junction on the B1396.
Police said the blue Ford Fiesta was travelling along Bank End Road from Blaxton towards Westwoodside at 2.20pm when a silver Peugeot turned right into its path from the junction with Wroot Road, heading towards Doncaster.
The Fiesta driver, a 45-year-old woman who lives in the area, managed to avoid a collision with the Peugeot but lost control of her car and hit a tree causing substantial damage.
The other car carried on without stopping to assist.
South Yorkshire Fire & Rescue Service crews from Doncaster station reached the scene and cut the roof off the car to reach the driver of the stricken Fiesta.
She was carried out on a spinal board after sustaining serious chest, stomach and back injuries and was taken to Doncaster Royal Infirmary.
Her 18-year-old passenger was also being treated at Doncaster Royal Infirmary for serious back and stomach injuries.
Bank End Road was closed for several hours while the emergency services dealt with the incident.
Police today made an appeal for witnesses to the incident.
Officers particularly want to hear from anyone who saw the silver Peugeot which failed to stop at the scene.
Anyone with information should call South Yorkshire Police on 0114 2202020 quoting incident number 605 of February 16.