I'd do one for myself, but it would just be a disappointment when I compare the finished product to my mental image. Sort of like watching "Starship Troopers" right after re-reading the original novel.
Do you know how hard it would be to generate a banner showing a 'dillocorn (armadillo with a unicorn horn) driving a jacked-up monster truck based on a '72 International pickup through a horde of slow, shambling zombies wearing Iowa Hawkeye gear while sipping on a bottle of Southern Comfort and listening to Cake's Greatest Hits on his CD player?
Well, I have no idea, but I think it might be pretty difficult.