What driver uses in golf with paper covers (4,6)

I believe the answer is:

wing mirror

'what driver uses' is the definition.
(mirror in a car)

'in golf with paper covers' is the wordplay.
'in golf' becomes 'ing' (I can't explain this - if you can you should believe this answer much more).
'with' becomes 'w' (abbreviation).
'paper' becomes 'mirror' (the Daily Mirror is a newspaper).
'covers' means one lot of letters goes inside another.
'w'+'mirror'='wmirror'
'ing' inserted inside 'wmirror' is 'WING MIRROR'.

I've seen this clue in The Guardian.

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