Forensic Crash Unit are investigating a serious traffic crash at Molendinar overnight.
Preliminary inquiries indicate at 7.25pm a utility was headed southbound on the Smith Street onramp to the Pacific Motorway when it has slowed to merge into the traffic.
A sedan following, has crashed into the rear of the utility at speed.
A passenger in the sedan, a 32-year-old Nerang woman, was transported to the Gold Coast University Hospital, where she remains in a critical condition.
The driver of the sedan, a 34-year-old Nerang man, was also transported to hospital with non-life-threatening injuries.
Investigations are ongoing.
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