Knight in a vehicle moving right (9)
I believe the answer is:
chevalier
'knight' is the definition.
(I've seen this before)
'a vehicle moving right' is the wordplay.
'moving' is an anagram indicator (letters are moved around).
'right' becomes 'r' (abbreviation).
'a'+'vehicle'='avehicle'
'avehicle' is an anagram of 'chevalie'.
'chevalie'+'r'='CHEVALIER'
'in' acts as a link.
(Other definitions for chevalier that I've seen before include "novelist" , "Each viler than the strange knight" , "French actor and singer" , "Old (French) "knight"" , "young Charlie?" .)