The motions to affirm are granted and the judgment is affirmed, it appearing that the only substantial question raised by the appeal — whether under § 206 (a) of the Interstate Commerce Act, 49 U. S. C., § 306 (a), appellants may lawfully *596continue operation until the determination by the Commission of their application for a certificate of public convenience and necessity — has become moot because of the denial of such application by the Interstate Commerce Commission on September 16, 1942.