Watch my progress from the cab, to Dulles airport, to the moon rover, to the plane, to Denver International Airport, to my rental car, to Vail Pass and finally sitting in my hotel room typing this.
Done with Twitter GPS. Now if only I could string them together in an animation like TwitterVision.
Rakesh Agrawal's blog 
That would be great if you could stitch them together and animate the entire thing. I tried to look into twittervision but the site has problems.