Crossword Genius

Area between two vehicles on special convoys (8)

Ross

I believe the answer is:

caravans

I'm a little stuck... Click here to teach me more about this clue!

'convoys' is the definition.
The definition and answer can be both groups as well as being plural nouns.
Maybe you can see an association between them that I can't see?

'area between two vehicles on special' is the wordplay.
'two vehicles' means two replacements for 'vehicle'.
'area' becomes 'a' (maths abbreviation).
'between' indicates putting letters inside.
'vehicle' becomes 'car' (car is a kind of vehicle).
'vehicle' becomes 'van' (van is a kind of vehicle).
'on special' becomes 's' (common abbreviation as in Special Air Service. I am not sure about the 'on' bit.).
'car'+'van'='carvan'
'a' placed within 'carvan' is 'caravan'.
'caravan'+'s'='CARAVANS'

Can you help me to learn more?

(Other definitions for caravans that I've seen before include "Vehicles with living quarters" , "Processions of camels travelling together in single file" , "Campers equipped with living quarters" , "Camper equipped with living quarters" , "Vehicles fitted for living in" .)

I've seen this clue in The Guardian.
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