Unusually large vehicle getting award (5)
I believe the answer is:
oscar
'award' is the definition.
(an Academy Award)
'unusually large vehicle getting' is the wordplay.
'unusually large' becomes 'OS' (short for over-size).
'vehicle' becomes 'car' (car is a kind of vehicle).
'getting' is a charade indicator (letters next to each other).
'os'+'car'='OSCAR'
(Other definitions for oscar that I've seen before include "Film statuette" , "- - Peterson, pianist" , "Librettist Hammerstein, d. 1960" , "Comms code for "O"" , "Hollywood statuette given as annual award" .)