About 1 week in CA. The peculiar thing is the plates were mailed to me from Rivian in Irvine not from the DMV in Sacramento. Also, we bought another new car in May but those plates took 5 weeks to receive directly from the DMV. The Rivian plates I received were serialized before the other car. Rivian must somehow get plates shipped to them directly?How long did it take to receive your permanent plates after delivery?