Crossword Genius

Formula 1 racetrack shortened, leading to car crash (6)

Ross

I believe the answer is:

fiasco

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'crash' is the definition.
The definition and answer can be both related to natural events as well as being singular nouns.
Perhaps you can see a link between them that I don't see?

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for fiasco that I've seen before include "Calamity" , "Total debacle" , "Complete and disastrous failure" , "An utter mess or cock-up" , "Ignominious failure" .)

I've seen this clue in The Independent.
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