title: How can I calculate my speed with an iPhone?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/3818902/how-to-calculate-speed-of-our-car-using-iphone">How to calculate speed of our car using iphone</a>  </p>
  </blockquote>
  
  
  
  <p>How can I calculate my speed with an iPhone? For example, I might want to measure the speed of my car when driving. How can I implement this?</p>