Some miss car centre that’s hard to find (6)
I believe the answer is:
scarce
'hard to find' is the definition.
(I've seen this before)
'some miss car centre' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'SCARCE' can be found hidden inside 'miss car centre'.
'that's' is the link.
(Other definitions for scarce that I've seen before include "Common? Definitely not" , "Rarely seen" , "Deficient in quantity" , "Hardly" , "Insufficient to meet demand" .)