Position of titled person touring Eton by car (9)
I believe the answer is:
baronetcy
'position of titled person' is the definition.
(a baronet's position)
'touring eton by car' is the wordplay.
'touring' indicates an anagram (touring can mean moving around).
'eton'+'by'+'car'='etonbycar'
'etonbycar' anagrammed gives 'BARONETCY'.
(Other definitions for baronetcy that I've seen before include "Title" , "Lowest hereditary honour" .)