I guess the first question has to be, "where are you?" Here in the US, they don't sell a passenger version of the NV-200. Thus mine are obviously metal wheel wells. If you are somewhere else where a passenger version is sold, I would assume you have plastic interior pieces over metal wheel wheels.
I am located in Montana and I have a US version SV cargo van. The Rear wheels both have a plastic cover mounted on the rear of the metal wheel well with a wire running in from the bottom. Thanks for any help.