Black vehicles and pick up trucks are lorries ultimately (7)
I believe the answer is:
hearses
'black vehicles' is the definition.
'hearses' can be an answer for 'vehicles' (hearse is a kind of vehicle). I'm not certain of the 'black' bit.
'pick up trucks are lorries ultimately' is the wordplay.
'pick up' becomes 'hear' (hearing is a kind of picking up).
'ultimately' says to take the final letters.
The last letters of 'trucks are lorries' are 'ses'.
'hear'+'ses'='HEARSES'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for hearses that I've seen before include "The last carriers" , "Vehicles for carrying coffins" , "Cars for corpses" .)