tell them you'll rent them that section for advertizing their dealership.
Depending how big the sticker is,a few bucks per square inch per month would work well with you.
Now doesn't that sound like a plan?
I myself can't afford another mortgage payment so I buy used.
Although I've heard of deals where companies pay new car owners to have their brands,and adds on their cars & trucks ,while they pay them so much a month.
I guess that wouldn't be bad unlless it was something discusting.
I've got no clue how'd you go about finding out about that practise?