My guess is it's all about the inspection.
Or it will be easy enough to cut some windows into the panels...?
What is the purpose behind this/these vehicle, tours, or?
First its to keep its 12 seat rating then its to allow me to take out the top side panels they unbolt in about 10 mins and use it for transporting people if I have too.
Then its for camping and corporate promotions etc. Then ts for movie shoots. THen its for charity trips to the jungle to carry a lot of kit or 6 people with the side panels removed.