Mortal Engines

London is on the move. No, not in some metaphorical, cultural, visionary sense: He is literally moving, making his way through the ruins of Europe, like a colossal, wildly overpopulated van. Nowadays, many cities travel through the ruins of Eurasia around the year 3100 or so. Since the 60-minute war almost destroyed all of humanity, mobile cities have become at the peak of popularity. Why? Why did someone say, "Do you know what this metropolis needs? Wheels". Of course, earthquakes. The cataclysm made the world unstable for a while, and everyone knows that the safest place in an earthquake is a giant moving vehicle. Therefore, the remnants of humanity have fixed the remnants of their cities on huge caterpillar tracks. And although the Earth's firmament has calmed down somewhat recently, people living in localities such as London have not even thought to fix themselves back on solid ground. And who can blame them? They can see the world without even leaving home. Literally. Of course, these mobile cities have a downside: They require a ridiculous amount of fuel, and they don't run on ethanol. Therefore, they catch up with other, smaller settlements and absorb their resources - which looks like a vicious circle. We have to move to absorb other cities so that we can keep moving. But it doesn't matter. This system has at least a catchy label: Municipal Darwinism. Cities should eat... or be eaten.