A man has serious head injuries after being found unconscious lying in grass on the side of a Gold Coast road after a suspected hit-and-run.
Police say the the 77-year-old was found after a "traffic incident" by a passer-by on the side of the Gold Coast Highway at Miami at 3.35am on Tuesday.
Queensland Ambulance Service says the man had serious injuries and was rushed to Gold Coast University Hospital, where he's being treated.
Police are questioning a 34-year-old man from Southport in relation to the incident and have seized his car as evidence.
The police forensic crash unit is investigating and have appealed for any witnesses or people with dashcam to come forward.