title: Google maps v3 driving directions with a clickable route / infowindow
body: <p>I'm plotting driving directions on google map using the v3 api. </p>
  
  <p>I'd like to add a listener so that if someone clicks on any point of the route that I can open an infowindow.</p>
  
  <p>I can do this with a polyline:</p>
  
  <pre><code>google.maps.event.addListener(mapEntry, 'click', function (e) {
      infowindow.position = e.latLng;
      infowindow.open(map);
  });
  </code></pre>
  
  <p>I've tried to attach the click event to the following items in the directions response:</p>
  
  <pre><code>response.route[0].overview_path
  response.route[0].overview_polyline
  response.route[0].overview_polyline.points
  </code></pre>
  
  <p>But no luck. Can't even hit the click event. Any ideas?</p>