Just abit of fun really..... I have a Knight Rider app on my mobile, which has a live speedometer/GPS function - works same as a sat nav speedo would work. The app primarily is an interactive sound board where you can interact with K.I.T.T. and also use the voicebox buttons to hear many of K.I.T.T.'s quotes from Knight Rider.....pretty cool when it's hooked up through the Parrot kit and playing in surround effect through the car stereo App start up: Speedometer: Shaun.