Where one may put, given time, car on common (4,5)

I believe the answer is:

golf green

'where one may put given time' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'car on common' is the wordplay.
'car' becomes 'golf' (I've seen this before).
'on' means one lot of letters go next to another.
'common' becomes 'green' (synonyms).
'golf'+'green'='GOLF GREEN'

I've seen this clue in The Guardian.

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