Speedy winner in a famous car (5)
I believe the answer is:
racer
This could be a double definition.
'speedy winner in a famous' is the first definition.
I know that 'speedy' relates to this answer.
'car' is the second definition.
(racer is a kind of car)
Can you help me to learn more?
(Other definitions for racer that I've seen before include "Fast competitive car or animal" , "one in a hurry" , "Runner" , "Fast driver" , "Speedway competitor, perhaps" .)