Swimmer getting shot of last fast car (5)

I believe the answer is:

turbo

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'car' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for turbo that I've seen before include "Pub torpor (anag) - type of aircraft" , "found in car" , "Engine supercharger" , "Powerful device" , "Type of supercharger using engines exhaust gases" .)

I've seen this clue in The Times.

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