Multi-wheeled transport used in this posh car enclosure (6,4)

'multi-wheeled transport' is the definition.

'this posh car enclosure' is the wordplay.
I cannot really see how this works, but
'car' could be 'roller' (I've seen this before) and 'roller' is found in the answer.
'enclosure' could be 'rink' and 'rink' is found within the answer.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).

'used in' acts as a link.