Saw a latest VW Arteon -driven by a old-ish gent (no hi-viz).I say that because it had no number plates- or even trade plates.It could be travelling to /from nearest vw dealerships -although there is a 9 miles distance.
The driver probably simply forgot to put his trade plates on the vehicle. (Having spent 2½ years working as a trade plater I know that it's easily done!)