Notice blokes in a test drive spinning (13)

I believe the answer is:

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

'blokes in a test drive spinning' is the wordplay.
'blokes' becomes 'men' (I've seen this in other clues).
'in' is an insertion indicator.
'spinning' indicates anagramming the letters.
'a'+'test'+'drive'='atestdrive'
'atestdrive' anagrammed gives 'advertiset'.
'men' placed inside 'advertiset' is 'ADVERTISEMENT'.

(Other definitions for advertisement that I've seen before include "Publicity announcement" , "plug" , "Bill" , "Placard" , "Notice - commercial" .)

I've seen this clue in The Telegraph.

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