Can you build a bike from waste generated in Denver?
What materials would be required?
What processing would be required?
Can you build all of the components from waste streams?
Some usefull links:
https://thestack.com/cloud/2015/10/05/the-worlds-first-diy-3d-printed-open-source-bicycle
http://www.n55.dk/MANUALS/SPACEFRAMEVEHICLES/spaceframevehicles.html