For instance, take New York (above) and compare it to Istanbul (below):
City Blocks Arranged By Size
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We're finally going to hear Elon Musk's plans for a mission to Mars. You can watch along to find out what it is at 4.30AM AEST. In the meantime, here's some of what we expect to hear, what it means to finally put a person on Mars and some concept art of the system at work.
Video. Forget Captain Sully -- if you're ever unfortunate enough to have something go wrong with your plane mid-flight, you might want Mark Penell in the cockpit instead.