Hitch, getting lift in northbound vehicle in outlying district (6)
I believe the answer is:
suburb
'vehicle in outlying district' is the definition.
'suburb' can be an answer for 'district' (suburb is a kind of district). I am not sure about the 'vehicle in outlying' bit.
'hitch getting lift in northbound' is the wordplay.
'hitch' becomes 'rub' (synonyms).
'getting lift' becomes 'bus' (I can't explain this - if you can you should give a lot more credence to this answer).
'in' is an insertion indicator.
'northbound' is a reversal indicator.
'rub' placed within 'bus' is 'brubus'.
'brubus' backwards is 'SUBURB'.
Can you help me to learn more?
(Other definitions for suburb that I've seen before include "Outlying city district" , "Residential urban district" , "Residential district on the outskirts of a city" , "Residential district away from city centre" , "District adjoining a town" .)