I would like to know if any of you have added public transport to Google Maps. I live in Cracow, Poland and I'm fed up with not having it there. I was once reading about adding geo location of bus stops and so on.  Could single non-related-to-the-city-transport enterprise deal with it and if so, how?  And what about time schedule, is there any way to make it synchronize itself with the official site?
Add public transport details to Google Maps (Cracow)
google maps
The transport companies or authorities wanting to provide their data to Google, must do so themselves. See the Google Transit Partner program