A prior section 2637, added Pub. L. 98–525, title VI, § 614(a), Oct. 19, 1984, 98 Stat. 2540, related to use of passenger motor vehicles of United States for transportation between residences and places of work of senior defense officials, prior to repeal by Pub. L. 99–550, § 2(a)(1), Oct. 27, 1986, 100 Stat. 3070.