What does the cryptic crossword clue "Defunct car maker returns, as we hear from the flock (4)" mean?

The definition is "as we hear from the flock". The wordplay uses a reversal. SAAB (reversal="‘defunct car maker’") = BAAS The answer is BAAS.

Defunct car maker returns, as we hear from the flock (4)

Guardian Cryptic #29267 | 10 Across | 2024-01-01 flower