The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
In this game you manage fleet of 20 self-driving cars.At the beginning they are random (some of them may even not be able to drive at all...), but they can evolve and get better.At the end of each generation, weak cars are removed from the pool and are replaced by new ones (random, or crossover of 2 existing cars). The better car is, the more chances it have to survive and produce offspring.