As a technology group operating worldwide, thyssenkrupp is able to offer new products and services that will have a noticeable impact on the environmental footprint of future megacities. However, as no one can predict with precision what will happen in the next few decades, in the Foresight process thyssenkrupp always develops several scenarios that describe a variety of developments. In our scenario we describe the fictional metropolis of Chengoho. The city is firmly in the hands of private investors. To escape from its own dense smog, the market-driven Moloch counts on a modular Lego approach.