Thanks for the first, and let me try to explain your second point:
In the early years (starting in 2010) I only took photos of buses and "extraordinary cars", trucks followed in 2012, vans on commercial plates later.
This means, that I never actually focused on these lower-taxed commercial plates. In other words, they were not the intended subjects of these photos, but simply happened to be in the frame when shooting other motives.
Because most of these plates are long gone, and because I'm the only danish-based spotter, it means that there's no other way to get a reasonable representation of these early lower-taxed commercial plates, so I "harvest" them the best that I can from the source photos in order to at least get them represented here.
I have lots of good photos of my main areas: trucks, buses, vintage/youngtimer cars, taxis, ambulances and (to some degree) panel vans.