She ultimately maintains such vehicles (7)
I believe the answer is:
estates
'vehicles' is the definition.
Although both the answer and definition are plural nouns, I cannot understand how one could define the other.
'she ultimately maintains' is the wordplay.
'ultimately' indicates one should take the final letters.
'maintains' becomes 'states' (I can't explain this - if you can you should believe this answer much more).
The last letter of 'she' is 'e'.
'e'+'states'='ESTATES'
'such' is the link.
Can you help me to learn more?
(Other definitions for estates that I've seen before include "Large cars" , "The dead leave them" , "People leave them" , "Demesnes" , "lands for development" .)