41 C.F.R. § 101-39.001
Section 211 of the Federal Property and Administrative Services Act of 1949, as amended, ( 40 U.S.C. 491 ), requires that the Administrator of General Services will, to the extent that he determines that so doing is advantageous to the Government in terms of economy, efficiency, or service, and after consultation with, and with due regard to the program activities of the agencies concerned, (a) consolidate, take over, acquire, or arrange for the operation by any executive agency of motor vehicles and other related equipment and supplies for the purpose of establishing fleet management systems to serve the needs of executive agencies; and (b) provide for the establishment, maintenance, and operation (including servicing and storage) of fleet management systems for transportation of property or passengers, and for furnishing such motor vehicles and related services to executive agencies. The exercise of this authority is subject to regulations issued by the President, which are set forth in Executive Order 10579, dated November 30, 1954.
41 C.F.R. § 101-39.001