Waroona Police are investigating the crash that saw a 4WD smash into a tree on Forrest Highway, Myalup.
A woman believed to be in her twenties has been airlifted to Royal Perth Hospital after the 4WD she was operating smashed into a tree.
Police report the incident occurred last night on Forrest Highway in Myalup.
The Mail understands the vehicle, a Toyota Kluger, had false number plates attached.
The woman was airlifted to Royal Perth Hospital where she remains in a stable condition.
Lucky escape: The driver of the 4WD was airlifted to Royal Perth Hospital where she remains in a stable condition.