Cal. Ins. Code § 11580.24
(a) A private passenger motor vehicle insured by its owner pursuant to a policy of insurance subject to Section 11580.1 or 11580.2 shall not be classified as a commercial vehicle, for-hire vehicle, permissive use vehicle, or livery solely because its owner allows it to be used for personal vehicle sharing as long as all of the following circumstances apply:
(b) For purposes of this section the following definitions apply:
(c) A personal vehicle sharing program shall, for each vehicle that it facilitates the use of, do all of the following:
(e) A personal vehicle sharing program shall continue to be liable pursuant to subdivision (d) until both of the following occur:
(2) The earliest of one of the following occurs:
(h) Notwithstanding any other law or any provision in a vehicle owner’s automobile liability insurance policy, while a private passenger motor vehicle is used by a person other than its owner pursuant to personal vehicle sharing facilitated through a personal vehicle sharing program, all of the following shall apply: