New Delhi, March 18 -- During the wee hours on Sunday mornings, there isn't much traffic on the Yamuna Expressway. Most people stay indoors, preferring the comfort of their homes as the mercury rises steadily. But one adventurous group has other ideas.

At the crack of dawn they set out on their bikes-not the 100cc pipsqueaks preferred by the mass market, but imported large-engine-capacity superbikes (above 600cc) that separate the boys from the men: Harley-Davidsons, Ducatis, Triumphs and BMWs. One after another the large bikes roar along the highway at high speed, causing those around them to pause and look on in wonder and envy.

Touted as India's first superbiking group, Group of Delhi Superbikers, or GODS, was started by surgeon Arun...