Drive a historic model car in open country (5)
I believe the answer is:
This clue might be a double definition.
'drive a historic model' is the first definition.
'motor' can be an answer for 'drive' (synonyms). I'm not certain of the 'a historic model' bit.
'car in open country' is the second definition.
'motor' can be an answer for 'car' (motor can informally mean a car). I am not certain of the 'in open country' bit.
Can you help me to learn more?
(Other definitions for motor that I've seen before include "Drive" , "Car; travel quickly" , "Driver" , "Wheels" , "Car; powered machine" .)