Crossword Genius

Current champion driver’s accessory? (9)

Ross

I believe the answer is:

cupholder

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

'champion driver's accessory?' is the definition.
'cupholder' can be an answer for 'champion' (someone who has won a cup). I am not sure about the 'driver's accessory?' bit.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for cupholder that I've seen before include "Saucer" , "Champion; Ganymede" , "successful last year?" .)

I've seen this clue in the Sydney Morning Herald.
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