"Expedition" on XKCD

I love this - I do this all the time, whenever I get a street view of a place. The temptation to wander through the streets of some place you've never been to is irresistible.

 
I started wondering about the future, and explorers wandering about the planet carrying cameras mounted on their hats, scanning everything on the ground and uploading it to Google. And then explorers bumping into one another on the shores of Lake Tanganyika, shaking hands, pointing to one another's hatcams and saying something like ...