When I first read about this advergame on Creativity I thought it was a silly idea. But then I gave it a try, and I changed my mind. The Coke Zero Rooftop Racer is a simple, very well designed and developed game, that clearly demonstrates that the advergames era isn't over yet.
The game is all about keeping a Coke Zero bottle "alive" and standing on top of a car in a NASCAR race. Balance the bottle and keeping the car powered at the same time to win the challenge. If you think about it, there isn't anything cutting edge in the concept, but the game play is addictive or at least sticky, and this is enough to make it successful.
Simple (but smart) ideas always win. Kudos once again to Crispin Porter + Bogusky for the excellent work.