I would say not, I work in car design and the previous companies I've worked for never have specified a wax or some other form of paint protective coating to be applied after trim and final (VW may be different but I doubt it). I'd suggest the reason mine 'looks so shiny' is because the van was only a couple of hours out of the dealer who probably did give it a clean and polish of some description (OK I'm aware of all the narrative on here regarding dealer cleaning but lets leave all that aside for the moment) and that it was a gloriously sunny day and by pure luck it caught it in 'all it's glory' as by no means am I any kind of photographer!