Dealer in Volkswagen trucks (5)
I believe the answer is:
agent
'dealer' is the definition.
(I've seen this before)
'in volkswagen trucks' is the wordplay.
'in' indicates the answer is hidden within the clue.
'AGENT' is hidden within 'volkswagen trucks'.
(Other definitions for agent that I've seen before include "Salesman" , "Spy - broker" , "Dealer" , "Double-zero-seven, for example" , "He or she acts for actors" .)