The driver of a Volkswagen Cross Polo crashed into a parked car north of the Roslyn bridge in Highgate yesterday afternoon.
The man was believed to be heading south and to have experienced a medical event then hit the rear of a parked vehicle in Highgate shortly before 1pm.
The road was closed for several hours, near the intersection of Oban St, as officers from the police serious crash unit investigated.
A police spokeswoman said the man, aged in his 60s, remained in a critical condition in Dunedin Hospital late last night.
Police and St John were unable to provide details of the medical incident but it is understood he had a cardiac arrest.
"CPR was administered at the scene by St John’s staff," the police spokeswoman said.
"He was taken to hospital in a critical condition."
