A great idea! Taking wind power to a new level. These sustainable cyclists on the beach in Ormond, Florida knew how to have carbon-free fun in 1903.

Image courtesy of Library of Congress. Sailing bicycles on the beach, Ormond, Fla. - Digital ID: (digital file from intermediary roll film) det 4a10865 http://hdl.loc.gov/loc.pnp/det.4a10865 - LC-D4-16394 (b&w glass neg.) - Repository: Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA

The image is Part of the Detroit Publishing Company Photograph Collection - Gift; State Historical Society of Colorado; 1903. - at the United States Library of Congress.