I don't have any seats in the back. In Norway we have a insane tax system on this type of cars.
The price for a new Exp with all the seats and registrated i have to pay approx $280 000. (1,4 mill NOK)
You can also registrate it as 2 or 3 seater, and then you pay approx half $ 140 000 ( 730 000 Nok). You also have to install a wall behind the drivers/passenger seats. This room i designated for cargo.
This is the version I have. When the car is older then 10 years you can put the seats in for free. 3rd of october my car is 9 years and if i install the seats after that date te tax is only $6400. Right now it's $14400
Tax is based on age, weight, eng volume and Horse power.
And for the record I am talking about green US Dollars