11. There are roughly one billion bicycles in the world (about twice as many as motor vehicles).
12. An estimated 130 million bicycles were produced worldwide in 2007 (more than twice the 52 million cars produced).
13. There are at least 400 bicycle clubs in America, with membership ranging from 10 to 4,000 members.
14. According to Transportation Alternatives, 10% of New York City's work force--approximately 65,000 humans--commute by bicycle.