Trade vehicle following some cars in town (5)
I believe the answer is:
cavan
'town' is the definition.
(I have seen 'Irish town' mean 'cavan' so perhaps 'town' could also mean 'cavan')
'trade vehicle following some cars' is the wordplay.
'trade vehicle' becomes 'van' (I've seen this before).
'following' says to put letters next to each other.
'some cars' becomes 'ca' (I can't explain this - if you can you should give a lot more credence to this answer).
'van' put after 'ca' is 'CAVAN'.
'in' is the link.
Can you help me to learn more?
(Another definition for cavan that I've seen is " Irish town".)