Idea time: wikitours. Spoken guides on public transportation.
This idea dates from 2007 when I was strolling around Paris and is very simple: Free, guided tours of cities on your smartphone. dictate a lot of wikipedia entries on building, statues, parks etc. mark the entries with gps map public transportation routes find corresponding wikipedia entries along the way get on a bus, open the application, enter the number of the route sit back, watch out the window and learn about everything you pass by In 2011 I was reminded of this idea by some apps that were actually developed. Wiki Talking Tours for instance. In 2007 I was thinking about this for a couple of weeks, but the project was simply too big. It's essential parts were non-existent so everything needed to be done from scratch. It is very promising to see that all these basic parts: the device itself (smartphone), a map interface (Google maps), spoken wikipedia entries ( Spoken Wikipedia ), transportation routes (Google transit), have all come forward in the last couple of ye...