iPod: Tempo, Jogging Frequency. Next Pulse?

A recent patent application has been filed by Apple in relation to its Nike+iPod Sport Kit, providing details of the possible features available in this Nike iPod shoes. Based on this description, tempo of a music track might be adapted automatically by the iPod to synchronize with jogger running speed.
This might be only one example of the coming features to be codeveloped by Apple and other third-parties.
Apple keeps increasing the market for "made for iPod" logo, increasing royalties-based earnings. The iPod is a real cash machine for Cupertino, and could be the reason why Intel-based computers are priced so low compared to Apple's hardware history.