Notwithstanding any provision of the general statutes, on or before June 30, 2003, the Commissioner of Social Services, in consultation with the Secretary of the Office of Policy and Management, may submit an amendment to the Medicaid state plan or implement changes necessary to reduce expenditures for Medicaid nonemergency medical transportation, provided in implementing such efficiencies or reduction of services no category of eligible need shall be eliminated other than the reimbursement for personal vehicle use.