Emergency services scrambled to Bodinnick yesterday evening after a car plunged into the River Fowey from the old ferry slipway.
Coastguards said the driver of the vehicle, thought to be a man from the St Austell area, managed to make it ashore without assistance.
He was treated by RNLI crews and paramedics at the scene and taken to the Royal Cornwall Hospital. His condition is not known at this time.
A police dive team confirmed that no other persons were involved in the incident after carrying out a search of the river.
More than 30 personnel from the emergency services were called to the scene including coastguards, lifeboat crews, police divers, paramedics and crews from Cornwall Fire and Rescue Service.
The incident happened at around 9.40pm.
The vehicle has been recovered from the scene.
