Worried actor taken in by fashion for fleet of cars (9)
I believe the answer is:
motorcade
'fleet of cars' is the definition.
'worried actor taken in by fashion' is the wordplay.
'worried' is an anagram indicator.
'taken in by' is an insertion indicator.
'fashion' becomes 'mode' (synonyms).
'actor' with letters rearranged gives 'torca'.
'torca' inserted inside 'mode' is 'MOTORCADE'.
'for' is the link.
(Other definitions for motorcade that I've seen before include "vehicular procession" , "Convoy" , "Maybe Kennedy's entourage" , "Procession using cars" , "Line of cars escorting a dignitary" .)