Conveyor of brief message after vehicle died (8)
I believe the answer is:
postcard
'conveyor of brief message' is the definition.
'postcard' can be an answer for 'message' (I have seen 'Brief message' mean 'postcard' so perhaps 'message' could also mean 'postcard'). I'm not sure about the 'conveyor of brief' bit.
'after vehicle died' is the wordplay.
'after' becomes 'post' (prefix meaning after, eg post-war).
'vehicle' becomes 'car' (car is a kind of vehicle).
'died' becomes 'd' (abbreviation next to the year of someone's death).
'post'+'car'+'d'='POSTCARD'
Can you help me to learn more?
(Other definitions for postcard that I've seen before include "It's sent without an envelope" , "Holiday missive" , "Letter without an envelope?" , "Where to write" , "Bringer of message" .)