The Ridgefield Police Department has identified the driver killed in an early morning car accident on Route 7 Saturday.  Police say 25-year old Nicholas Vega of Danbury was pronounced dead at the hospital.  His passenger, a 21-year-old Stamford resident, and the driver of the southbound vehicle, a 71-year-old Bethel resident, were also hospitalized.  Ridgefield Police say the investigation is ongoing.