Saw this in a tweet today.  Watched the video.  All I can say is “Wow!”.

Street Slide

This is some more geeky-cool tech from Microsoft Research (Here is the LINK to their article about this.)  Can you imagine how cool this will be on a GPS/3G smartphone? …like the Windows Phone 7 I’m going to get later this year? 

(Credit where due: The tweet was to this article on The Wall Blog.)