Streaking by, dodging cabs and SUVs, bike messengers are the rolling Pony Express of the city.

From Alley Cat races on the weekend to the Annual Cycle Messenger World Championship, they have a community that includes the hardcore, the renegade and the working stiff.

Who are they and why are they risking life and limb to deliver cargo through New York traffic?

Click here to buy the 8" X 10" full color, 184-page book that features a selection of 68 Overlooked New Yorkers, for $25.