I gotta say, I got to thinking about this and I thought, “What a genius idea - sending out trucks that look like your competitor’s. It would create the image that your competitor’s product was always broken!”
Of course, OTOH, name recognition is probably a bigger goal, so you would be defeating that goal. Anyway, it caused me to think about it for an inordinately long time… and I wasn’t even stoned. Lol.