You just roll on the ground laughing if you'd seen the looks I've gotten from car salesmen when I demanded they either remove their logo's from the vehicles I purchased from them or pay me $1000 for short-term advertising fees (yeah, short-term as in "just until I drive off your lot").
They've removed the sticker logos but thought they were pretty cute by leaving their logo'd license plate frame on. I've wanted to remov them right their on their lot, pull out black spray paint, paint over the logo, and re-attach the frame. - I just wait to do that @ home. I have driven back onto their lots within a day with the frame painted over (did it just last June when I traded in my truck for another truck). It was clear to me that they noticed, they just didn't say anything.