CHP now says they suspect that alcohol may have played a role in the single car accident that killed 2 and seriously injured another passenger early Sunday Morning on I-5 near Liberal Avenue in Corning.    Chp says the driver went off teh roadway , down an embankment and struck a tree. The Driver and 1 passenger were killed in teh accident , another Passenger had to be transported to the hospital with serious injuries .       Offcials have not released the identity of the 2 victims