Vehicle used in India, not over Georgia (5)
I believe the answer is:
tonga
'vehicle used in india' is the definition.
(type of horse-drawn vehicle in India)
'not over georgia' is the wordplay.
'over' says the letters should be written in reverse.
'georgia' becomes 'GA' (abbreviation for the US state).
'not' back-to-front is 'ton'.
'ton'+'ga'='TONGA'
(Other definitions for tonga that I've seen before include "Tropic island" , "Polynesian Kingdom" , "Do a bad tango in the Pacific archipelago" , "Horse-drawn vehicle" , "Pacific Ocean monarchy" .)