A Coach's vehicle homicide trial has been postponed.  Ville Platte High football coach Roy Serie was arrested last year after police say tests showed he had illegal drugs in his system at the time of a car crash that killed his wife, Sheila and the driver of the other car.  Police say Serie's car crossed the median hitting Shannon Cox's car head-on.  Serie pleaded not guilty two counts of vehicular homicide, and the other charges.  The district attorney says the case has been moved to moved to January.