http://www.youtube.com/watch?feature=player_embedded&v=tY-O8uEdU7U Few months ago, I was talking to a friend about how I badly want the road bumps and the potholes in my city fixed. During the same conversation, I shared this idea that I had of an automatic road bump updater which will collate all data and send it to the concerned authorities. As we continued the discussion, I figured that an accelerometer can help do that. Soon, I realized that if only I could get this idea implemented, it will be a start to solve one of the biggest traffic issues in my city.
And I have just found out that an exact implementation exists for the people of Canada. Did someone say "If more than one person thought of the same thing, it's most probably a good idea"?