Crossword Genius

Racing vehicle kept for sale? (5,3)

Ross

I believe the answer is:

stock car

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

This clue might be a double definition.

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

'kept for sale?' is the second definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.

Can you help me to learn more?

(Other definitions for stock car that I've seen before include "Vehicle adapted for bumping races" , "production saloon" , "Production vehicle used in racing" , "Production-line vehicle modified for racing" , "Type of racing" .)

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