Crossword Genius

Horrible, unpleasant experience having vehicle impounded (7)

Ross

I believe the answer is:

macabre

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

'horrible' is the definition.
(thesaurus)

'unpleasant experience having vehicle impounded' is the wordplay.
I cannot quite see how this works, but
'vehicle' could be 'cab' (cab is a kind of vehicle) and 'cab' is found in the answer.
The remaining letters 'mare' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for macabre that I've seen before include "gruesome result" , "Grotesque" , "Gruesome, suggesting death" , "Chilling" , "Dark and disturbing" .)

I've seen this clue in The Telegraph.
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