World's Largest McDonalds?

So this cross-turnpike McDonalds in Oklahoma (stretched across I-44 just west of Vinita) claims. I don't think it's true, unless perhaps you count all the square footage in the building that isn't really McDonalds at all. Like the gift store. Or the ice cream stall. Or the area previewing the Will Rogers Museum (which is in Claremore).

Still, I've gone past this McDonalds twice every time I've been back and forth between home and school, and only this set of times through have I not stopped. Ah well, all traditions have to break sometime.