Nine ladies dancing somewhere on the motorway? (6,4)

I believe the answer is:

inside lane

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'somewhere on the motorway?' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'nine ladies dancing' is the wordplay.
'dancing' is an anagram indicator.
'nine'+'ladies'='nineladies'
'nineladies' is an anagram of 'INSIDE LANE'.

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I've seen this clue in The Times.

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