Crossword Genius

A servant to clean your car? (5)

Ross

I believe the answer is:

valet

I'm a little stuck... Click here to teach me more about this clue!

'a servant' is the definition.
(valet is a kind of servant)

'clean your car?' is the wordplay.
I cannot quite see how this works, but
'car?' could be 't' and 't' is present in the answer.
The remaining letters 'vale' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

'to' is the link.

Can you help me to learn more?

(Other definitions for valet that I've seen before include "Gentleman's attendant" , "Personal male assistant" , "Personal manservant" , "dresser" , "Male servant" .)

I've seen this clue in the Evening Standard.
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