What does the cryptic crossword clue "Only our car's treated in a resentful fashion (11)" mean?

The wordplay uses an anagram. anagram of ONLY + OUR + CAR'S = RANCOROUSLY The answer is RANCOROUSLY.

Only our car's treated in a resentful fashion (11)

Daily Mail Cryptic #17534 | 29 Across | 2025-01-16 flower