Lorries in boring county (8)

I believe the answer is:

flatbeds

'lorries' is the definition.
(flatbed is a type of lorry)

'boring county' is the wordplay.
'boring' becomes 'flat' (I've seen this before).
'county' becomes 'beds' (I've seen this before).
'flat'+'beds'='FLATBEDS'

'in' is the link.

I've seen this clue in The Times.

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