Google Indoor Maps
Some time ago I pointed to an interesting company, Micello, who's focusing on mapping the inside of building. They start where Google Maps and Street View stops. It looks like they weren't the only one's that thought this was a good idea... Google seems to be working on this too.
UPDATE 15-10-2011: Why is indoor navigation so hard?
"According to a new rumor, Google could soon take Street View indoors and allow its users to walk into virtual stores."UPDATE March 26, 2010: Also refer to this post.
- Is Google Planning to Take Street View into Stores? (Updated) (view on Google Sidewiki)
UPDATE 15-10-2011: Why is indoor navigation so hard?