We're starting to see an increasing trend of ads referencing other ads. For you non-ad nerds, this ad is parading as part of the famous Economist campaign. You drive a Prius, you're smart - get it? While this little game might make the ad guy in me smile, it also makes me want to walk into a crowded shopping mall and ask people to "raise your hand if you get this ad." I'm not one to trample creativity, but it's always a better idea to make your own brands strong instead of relying on the brilliant brand work of others. With all due respect to Saatchi & Saatchi, London.