Diplomatic motor vehicle import privileges conditioned on restricted disposal and mandatory concurrence and notification procedures. Certificate for duty-free import or purchase of motor vehicles for official use by diplomatic missions imposes an undertaking that vehicles will not be sold without first offering them to the State Trading Corporation through the Ministry of External Affairs and without concurrence of the Ministry or the Central Board of Revenue as applicable; customs duty must be paid if sold within three years to a non-privileged person. Transfers to privileged persons require prior Central Board of Revenue concurrence, advance notice of sale and buyer details to customs, and procurement and forwarding of exemption certificates in prescribed copies.