Transport Glaswegian maybe carrying duck — I’m not sure! (7)

I believe the answer is:

scooter

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

'glaswegian maybe carrying duck i'm not sure' is the wordplay.
'glaswegian maybe' becomes 'scot' (I can't justify this - if you can you should give a lot more credence to this answer).
'carrying' means one lot of letters goes inside another.
'duck' becomes 'o' (resembles zero - 'duck' in cricket).
'i'm not sure' becomes 'er' (expression of hesitation).
'scot' placed around 'o' is 'scoot'.
'scoot'+'er'='SCOOTER'

Can you help me to learn more?

(Other definitions for scooter that I've seen before include "Moveable toy" , "Two-wheeled motor vehicle" , "Light motorcycle" , "Traveller" , "Vehicle and child's toy" .)

I've seen this clue in The Times.

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