Vehicles, like buildings, can be made over to suit the needs of new owners. Often a restaurateur will leave old signage in place, especially when it has a burly, blue-collar appearance; the same is true of shopkeepers whose business has nothing to do with food but who understand that meat is chic.
The second owner of a commercial vehicle, on the other hand, is much more likely to efface signs of its previous use, or try to. (Perhaps the difference is that made-over buildings and their signage are intended to be part of historically or sociologically layered experiences, if innocuous ones, into which customers are invited, while a sign on a truck is simply a sign, and simpler is better.) In the bright light of day, I snapped a photo of this Arnold Bread delivery van; only later, onscreen, was it easy to spot the traces of "Penske truck rental."
See also this former van for Captain John Derst's of Savannah, more recently sighted in Harlem.
Arnold Bread delivery truck
Seen in Sheepshead Bay, Brooklyn