Arunkumar R, Gayathri and Sajana, three mechanical engineering students of Pondicherry Engg College, Puducherry made an air-propelled motorbike and successfully conducted a test ride on May 23, 2004. During the demonstration, the bike with a modified engine covered 1.5 km on a single tank of 1.5 cu m air stored at a pressure of 150 bar.