Advantaged with transport (3)
I believe the answer is:
van
'transport' is the definition.
(van is a kind of transport)
'advantaged with' is the wordplay.
'with' indicates the answer is hidden within the clue.
'VAN' can be found hidden inside 'advantaged'.
(Other definitions for van that I've seen before include "Commercial vehicle or front of army" , "Leading military units" , "Leading group" , "Commercial vehicle in the lead?" , "Leading part" .)