I don't care how delicious this cake is on the inside, I'd never cut into it. I'd be too worried about marring its AR marker frosting, and the wonderful augmented reality memes contained therein. Final guesses?
Now that's a handy magic trick: Observe! This lot, empty but for the world's largest augmented reality marker. Astonish! As a towering skyscraper flickers to life in its place. Wonder! At just how big a camera they must have needed.