Leave the vehicle burning (6)

I believe the answer is:

alight

'burning' is the definition.
(set alight)

I can't explain the remainder of the clue.

(Other definitions for alight that I've seen before include "Descend from vehicle" , "Burning; get down" , "Land; burning" , "Disembark, land" , "(Of bird) settle" .)

I've seen this clue in The Globe and Mail.

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