European road safety organisation OVK (Parents of Children Killed in Road Accidents) has launched the Slow Down iPhone app, designed to raise awareness on carelessness while driving.
Shown in the video above, the app Slow Down uses the iPhone’s sensors to track how fast you’re driving. If you go a few miles over the speed limit, it slows down the tempo of any track playing from your music library. And if you exceed by more than 6 miles per hour, the music stops completely until you resume driving at a normal speed again. Goofy but clever, though I’d imagine it getting annoying when you need to pass people up on the freeway.