TheWashCycle (http://www.thewashcycle.com) is making a rough estimate that 20,000 cyclists attended the inauguration.
http://www.thewashcycle.com/2009/01/20000-cycled-politely-to-the-inauguration.html
Now, that a very rough estimate but considering I have heard overall numbers ranging from 1 to 2 million (tending to settle towarsd the 1.8 million number) 20k bikes is as good a number as any. It'd be nice to have an actual, scientifically determined number.
2009-01-23 20:32:12