In this scenario, humanity has managed to colonise some of the solar system, including Mars, some of the moons of Saturn and Jupiter and some of the larger asteroids of the belt. In most places they have been able to terraform the atmosphere so that it is breathable, so while perhaps not as dense as Earth's atmosphere, it is survivable. To save on energy consumption or to save polluting the atmosphere, humans tend to use human-powered vehicles to get about.
- What design features would have to be considered to build a working bicycle/human-powered vehicle to get about in these conditions?
- How would riding a bicycle/human-powered vehicle in low gravity/lower atmosphere density differ from riding one on Earth?