Appellants The Center for Auto Safety and The Safety Institute, Inc. appeal the district court’s denial of their second motion to intervene. As explained in our decision affirming the denial of their first motion to intervene, 1 Appellants seek to intervene for the limited purpose of unsealing the record. The district court concluded that Appellants’ motion was moot because it had already granted Relator Joshua Harman’s motion to unseal the record. Appellants counter that their motion is not moot because the district court’s order granting this relief was neither final nor unappealable — and has been appealed by Appellees Trinity Industries, Inc. and Trinity Highway Products, L.L.C. Assuming without deciding that Appellants are correct, the district court’s order has since become final and unappealable, as this Court recently granted Appellees’ motion to voluntary dismiss their interlocutory appeal of the unsealing order. 2 As a result, Appellants’ second motion to intervene is *449 now indisputably moot, 3 and we DISMISS this appeal.