Advert; vehicle (7)

I believe the answer is:

trailer

I believe this clue is a double definition.

'advert' is the first definition.
(I know that trailer is a type of advert)

'vehicle' is the second definition.
(I know that trailer is a type of wheeled vehicle)

(Other definitions for trailer that I've seen before include "commercial vehicle drawn along" , "Short film advertising programme" , "vehicle without power" , "Towed vehicle; advertisement" , "house on wheels" .)

I've seen this clue in The Telegraph.

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