It's fantastic, the world as your canvas.
Obviously, it's not exactly as drawn, because the world is round. The actual image would be a lot more shakier and distorted.
But, it does create the idea of what would we see if we all traced our steps. Literally or in other senses - it'll be really cool, because it'll be like us, quite unique and fascinating.
(And, the guy must be pretty well off, or at least had a lot of sponsors to pull this off)
