Vehicle to leave carried goods (5)
I believe the answer is:
cargo
'carried goods' is the definition.
(I've seen this before)
'vehicle to leave' is the wordplay.
'vehicle' becomes 'car' (car is a kind of vehicle).
'to leave' becomes 'go' (to go is to depart or leave).
'car'+'go'='CARGO'
(Other definitions for cargo that I've seen before include "Goods in transit" , "Consignment" , "Ship's load" , "stuff to be carried by ship" , "Shipment" .)