California Code, Vehicle Code - VEH § 16457

Whenever proof of financial responsibility is required to be filed pursuant to this chapter, no person of whom that proof is required shall drive any motor vehicle not covered by the certificate of proof of financial responsibility filed by him or her with the department, nor shall any applicant for that proof knowingly fail to disclose ownership of a motor vehicle in the application for proof of financial responsibility or to disclose any subsequently acquired motor vehicle.