This picture conveys so much. Gives details about all urban areas of the world and all major trade routes - be it air, naval or land.
Apparently, the Europeans love air travel
Australia is a lot less urbanized than I expected.
India seems to be quite rich lately in roads (Vajpayee's golden quadrilateral effect?)
The upper reaches of Canada and Russia are still less developed.
Greenland is still non-existent (but I did expect this)
Overall, a delicious picture!