Hmmm...Photography business...Photography Van...
I'm thinking something that looks like the old 110 Film...
Add some vehicle wrap graphics to the black plastic piece that runs between the tires to make it look like a film strip and a film canister label. Yes, it would be "twisting" the film cartridge and using both a side view and a top view, and possibly a bottom view (for the film), but it would be too obscure with just the side view since it's all black. Yeah, I can do this now and make it look cool and be an asset for my business! Great idea!
As for how to do it, any company that does vehicle wraps or vehicle graphics should be able to print what you want/need and attach it to the pizza pans. Might not be cheap (in relative terms), but shouldn't be too expensive either.