Louder mention of a racing driver (5)

I believe the answer is:

lauda

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'racing driver' is the definition.
(I've seen this before)

'louder mention of a' is the wordplay.
'louder mention of' becomes 'laud' (I can't justify this - if you can you should give a lot more credence to this answer).
'laud'+'a'='LAUDA'

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(Other definitions for lauda that I've seen before include "Old driver" , "racing legend" , "racing driver" .)

I've seen this clue in the Evening Standard.

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