; temporary or intermittent services under section 3109(b) of title 5, United States Code, but at rates for individuals not more than the daily equivalent of the annual rate of basic pay for level IV of the Executive Schedule under section 5315 of such title; hire of one passenger motor vehicle; advance payments in foreign countries in accordance with section 3324 of title 31, United States Code; benefits comparable to those payable under sections 901(5), (6), and (8) of the Foreign Service Act of 1980 ( 22 U.S.C. 4081(5) , (6), and (8))