Police say Erik Halpin crashed the classic car into the Crooked River along Highway 27 south of Prineville.
It happened around 3 P.M. Sunday and by the time OSP and local emergency responders got to the scene, Halpin had swum from the car to the shore.
Halpin was taken by air ambulance to St. Charles Medical Center in Bend and treated for his injuries.
Halpin is charged with unauthorized use of a motorcycle vehicle, driving under the influence of intoxicants and criminal mischief.
He is currently lodged in the Crook County jail.