One may put one's foot down using this vehicle (7)

I believe the answer is:

scooter

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'vehicle' is the definition.
(scooter is a kind of vehicle)

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

(Other definitions for scooter that I've seen before include "one makes off quickly" , "Two-wheeler" , "Two-wheeled motor vehicle" , "Vehicle and child's toy" , "it may need physical boost" .)

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

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