All they're missing is a strange man dressed in purple and wearing a top hat. Nestle has embarked on a high-tech, Charlie and the Chocolate Factory-inspired campaign, implanting GPS technology in six candy bars and then using that technology to find the lucky winners. But instead of winning a trip to see Willy Wonka they get a £10,000 prize.
Clearly the market is ripe for GPS technology inspired by children's movies, if this and the Wizard of Oz shoes are any indication. I'm holding out for the Mary Poppins umbrella that flies me wherever I want to go.