We are accustomed to seeing many a white van in our lives in fact there is of course the cliché “the white van man”.
Is there a "service or supply" of some sort behind that white van or quiet little unit or shop?
Who knows except the people running that business.
Of course business might be brisk and someone might feel that advertising is not necessary. I have spoken to several people recently who need more business now at this time but have never advertised before. Ever.
Another cliché…”Strike while the irons hot”. When business is good, do not hesitate!
Increase your business awareness and advertising while you have the money and time . You have no idea when things might turn.
Also, every time your vehicle is parked in a street, the sign will inevitably create attention and someone will call your business.
Is it someone of high importance in an organisation who wants to order a vast amount of material?
You just do not know. They will just not know unless your van or premises is appropriately lettered.