Anyone who witnessed a serious crash at Runaway Bay yesterday, or who has dashcam footage of the incident, is being encouraged to contact police.
The call comes after a 91-year-old man was hit by a car around 1:10 on Tuesday, while crossing Bayview St on his mobility scooter.
He was on a pedestrian crossing at the time.
The elderly man was taken to the Gold Coast University Hospital were he remained on Wednesday in a serious condition.
The driver of the car, a 70-year-old woman, was not hurt.
The Forensic Crash Unit is investigating the incident, and hope any dashcam footage will help them work out exactly what happened.