SEATTLE — A driver was arrested on suspicion of vehicular homicide after a Porsche and a motorcycle that witnesses said appeared to be racing collided Monday on southbound State Route 167 in King County, authorities said.
Detectives with Washington State Patrol are now asking for witnesses to come forward.
Washington State Patrol communications received 9-1-1 calls at about 12:45 p.m. Monday, reporting a serious car-motorcycle collision on southbound SR 167 just north of SR 18…