I have uploaded the first draft of my Bike Power report. Here is the introduction, for those that are impatient:
The oldest form of human transportation is by foot: walking, jogging, and running. The marrying of foot power and the wheel yields a transportation mode that allows for greater speed, power, endurance, and cargo capacity than is possible by foot power alone. Bicycles and tricycles are used throughout the third world to transport people and cargo. The technology is both quite simple (allowing easy local / home repair) and quite sophisticated. It has a very low carbon footprint, probably the lowest carbon footprint of all forms of transportation (probably lower even than horse powered transportation).
Update: fixed some typos in the document.