A CAR careered off Eel Race Road in Seaford at about 10pm on Saturday 13 May and hit a tree.
A driver, 17, from Seaford and passenger, 18, also from Seaford, were both trapped in the vehicle for some time before they were freed by emergency rescue workers.
The driver was airlifted to hospital with serious injuries and an ambulance took the passenger to hospital with life-threatening injuries.
Police will investigate whether speed was a contributing factor to the crash.