Cal. Rev. & Tax. Code § 8351

The Controller shall transmit all money received by him or her in payment of taxes, interest, and penalties due under this part, and restitution orders or any other amounts otherwise authorized by law to be collected by the Controller, or any other amounts imposed by a court of competent jurisdiction to be paid to the Controller, to the State Treasurer who shall deposit it in the State Treasury and credit it to the Motor Vehicle Fuel Fund, which is continued in existence as the Motor Vehicle Fuel Account in the Transportation Tax Fund, which fund is hereby created. All fees paid and accepted for issuance or reinstatement of licenses under this part shall be deposited by the board in the State Treasury to the credit of the same account.

Any reference in any law or regulation to the Motor Vehicle Fuel Fund shall be deemed to refer to the Motor Vehicle Fuel Account in the Transportation Tax Fund.

Notwithstanding any other provision of law, the Controller may use the funds in the Motor Vehicle Fuel Account in the Transportation Tax Fund for cashflow loans to the General Fund as provided in Sections 16310 and 16381 of the Government Code. Any such loan shall be exempt from paragraph (2) of subdivision (b) of Section 16310 of the Government Code. Interest shall be paid on all moneys loaned to the General Fund and shall be computed at a rate determined by the Pooled Money Investment Board to be the current earning rate of the fund from which the money is loaned. This subdivision does not authorize any transfer that would interfere with the carrying out of the object for which these funds were created.