California Code, Vehicle Code - VEH § 17152

In any action against an owner, bailee of an owner, or personal representative of a decedent on account of liability imposed by Sections 17150, 17154, or 17159 for the negligent or wrongful act or omission of the operator of a vehicle, the operator shall be made a party defendant if service of process can be made in a manner sufficient to secure personal jurisdiction over the operator. Upon recovery of judgment, recourse shall first be had against the property of the operator so served.