Hubville suggests the only viable and extensive solution to prevent climate change. It is based on new sustainable cities being built, and connected to a network. The first city is suggested to be built in a remote location in Sweden. A key area to focus, in order to achieve sustainability, is transportation of goods and people. We suggest the use of ultrasonic vactrains to connect these sustainable cities. The technology is mature, but even regular high speed trains would suffice in a transition period. In these sustainable and connected cities there will be a massive focus to implement sustainability within each city, as well as the rest of society. Here, entrepreneurship will really be about changing the world. Westerners usually perceive climate change prevention as sacrificial. Thus, the objective is to show everyone that the sustainable lifestyle is attractive. What if it is possible to shift into sustainability in a desirable way?