(a)
When a member of an armed force is ordered to make a change of permanent station, one motor vehicle that is owned or leased by the member (or a dependent of the member) and is for the personal use of the member or his dependents may, unless a motor vehicle owned or leased by him (or a dependent of his) was transported in advance of that change of permanent station under section
406
(h) of title
37, be transported, at the expense of the United States, to his new station or such other place as the Secretary concerned may authorize—
(1)
on a vessel owned, leased, or chartered by the United States;
(2)
by privately owned American shipping services;
(3)
by foreign-flag shipping services if shipping services described in clauses (1) and (2) are not reasonably available; or
(4)
by other surface transportation if such means of transport does not exceed the cost to the United States of other authorized means.
When the Secretary concerned determines that a replacement for that motor vehicle is necessary for reasons beyond the control of the member and is in the interest of the United States, and he approves the transportation in advance, one additional motor vehicle of the member (or a dependent of the member) may be so transported.