Employer of cad getting out of used car (4)
I believe the answer is:
user
'employer' is the definition.
(thesaurus)
'cad getting out of used car' is the wordplay.
'getting out of' is a deletion indicator.
'used'+'car'='usedcar'
'usedcar' with 'cad' removed is 'USER'.
'of' acts as a link.
(Other definitions for user that I've seen before include "Manipulator" , "One who exploits, to be sure" , "Drug taker" , "Druggie" , "Drug-taker" .)