If you are in Boston, Portland, OR, San Diego, San Francisco, Madrid and Turin you can get live transit updates in Google Maps. This is pretty cool. Here is the video from the Google Mobile blog.
I wonder what percentage of people in these cities will be aware of this feature in the next few months? You’ll be able to tell who knows and who doesn’t because those who are informed will be more relaxed and won’t be leaning out into traffic to see if that bus or train is coming.