Convertible orange car showing superiority (9)
I believe the answer is:
'superiority' is the definition.
'convertible orange car' is the wordplay.
'convertible' is an anagram indicator.
'orangecar' is an anagram of 'ARROGANCE'.
'showing' is the link.
(Other definitions for arrogance that I've seen before include "High-handed attitude" , "Wild self-importance" , "Hauteur" , "Conceitedness" , "Aggressive assertiveness" .)