Company cars lost crossing international area of France (7)
I believe the answer is:
corsica
'area of france' is the definition.
(I know that Corsica is part of France)
'company cars lost crossing international' is the wordplay.
'company' becomes 'co' (abbreviation).
'lost' indicates anagramming the letters.
'crossing' is an insertion indicator (to cross can mean to go over or around).
'international' becomes 'i' (abbreviation eg in IMF).
'cars' is an anagram of 'rsca'.
'rsca' enclosing 'i' is 'rsica'.
'co'+'rsica'='CORSICA'
(Other definitions for corsica that I've seen before include "Mediterranean location" , "Mediterranean island, chief city Ajaccio" , "French territory" , "Napoleon's island birthplace" , "Napoleon's birth island" .)