Distributions by those willing to supply cars (7)
I believe the answer is:
estates
'cars' is the definition.
(estate is a type of car)
'distributions by those willing' is the wordplay.
I cannot quite understand how this works, but
'by' could be 'at' and 'at' is present in the answer.
The remaining letters 'estes' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'to supply' is the link.
Can you help me to learn more?
(Other definitions for estates that I've seen before include "Country properties" , "Demesnes" , "Extensive landed properties" , "People leave them" , "lands for development" .)