Item lost in stylish automobile (6)

I believe the answer is:

couple

'item' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for couple that I've seen before include "Brace, pair" , "Pair of attached people" , "item" , "Bonnie and Clyde, say" , "Two - join up" .)

I've seen this clue in the Irish Times.

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