Crossword Genius

Button container that needs refilling regularly (6,3)

Ross

I believe the answer is:

racing car

This clue is a double definition.

'button container' is the first definition.
(Jenson Button is a racing driver)

'that needs refilling regularly' is the second definition.
(racing cars must be filled with fuel regularly)

(Other definitions for racing car that I've seen before include "Vehicle designed for speed" , "Sports vehicle" , "Ferrari, for example" .)

I've seen this clue in The Independent.
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