The filing fees for a nonprofit mutual benefit ridesharing corporation are the following:
(a) Nonprofit mutual benefit corporation having as its sole purpose the operation of a single ridesharing vanpool vehicle designed for transporting at least seven persons, including the driver, under an arrangement in which ridesharing is incidental to another purpose of the driver: No fee.
(b) For purposes of this section ridesharing shall have the meaning specified in Section 522 of the Vehicle Code.