Cal. Ins. Code § 11580.241
(a) A personal vehicle sharing program shall, for each vehicle that it facilitates the use of, do all of the following:
(1) Provide both of the following during all times that the vehicle is engaged in personal vehicle sharing:
(A)
(2) Provide the vehicle owner and any person that operates the vehicle pursuant to a personal vehicle sharing program with a written disclosure of all of the following:
(3) Disclose all of the following in writing to the vehicle owner:
(b)
(d)