Two teenagers were seriously injured after their car smashed into a tree near Doncaster early yesterday.
It took fire crews nearly an hour to cut the lads free from the wreckage.
The A19 between Carcroft and Askern was closed for almost seven hours.
The car crashed just before 1am on Doncaster Road, Owston, about 600 yards north of the junction with Askern Road.
Police say a silver Suzuki Swift hatchback failed to negotiate a bend, careered across grass and hit a tree and then a lamppost.
The car was severely damaged and, because of the injuries suffered by the 19-year-old driver and his passenger, aged 15, Adwick and Doncaster firefighters spent 55 minutes removing them.
They had to cut the roof off the car, which was wedged between the tree and post.
The driver, from South Elmsall, was detained in Doncaster Royal Infirmary with serious head, neck and chest injuries.
His friend, who lives in Askern, is also detained with serious shoulder injuries and a fractured hip.
No other vehicles were involved in the collision and a police spokesman confirmed there had been no arrests.
Highways engineers were called out to remove the damaged lamppost.