(Molalla, OR)  --  Three people are in critical condition, after a car plunged over an embankment by the Molalla River.  Clackamas County sheriff's deputies say it appears alcohol was a factor in the crash, which happened late yesterday afternoon.  Authorities say the car dropped about 40 feet to the riverbed after traveling along South Molalla Forest Road.  Deputies say the three young men who were injured are from Newberg.