Did you know? A bicycle is a marvel of engineering efficiency, one where an investment in 22 pounds of metal and rubber boosts the efficiency of an individual mobility by a factor of three. On my bike I estimate that I get easily 7 miles per potato. For more information view the text and data in Chapter 6 of Plan B 4.0: Mobilizing to Save Civilization.
Here's a clip of Lester Brown from PBS's Journey to Planet Earth series on Plan B: Mobilizing to Save Civilization. Posted March 29, 2011.