Man has head injuries after Sydney crash

A man is in hospital with head injuries after crashing into several cars and rolling his vehicle in Sydney's inner west.

The 29-year-old driver, the sole occupant of his car, crashed on Kings Road at Five Dock about 11.50pm on Wednesday and was treated by paramedics before being taken to Royal Prince Alfred Hospital where he will undergo mandatory testing, police said.

Officers will speak with the driver when medical clearance is given and anyone with information is urged to contact police as inquiries continue.