Body of man found in car (7)
I believe the answer is:
cadaver
'body' is the definition.
(cadaver is a kind of body)
'man found in car' is the wordplay.
'man' becomes 'dave' (I've seen this before**).
'found in' indicates putting letters inside.
'dave' put within 'car' is 'CADAVER'.
'of' is the link.
(Other definitions for cadaver that I've seen before include "Remains of a human" , "Human body dissected by medical students" , "Dead body, corpse" , "Dead human body" , "Human corpse" .)