LIKE pilgrims to some holy land, but tattooed and on two wheels, thousands of adventure motorcycling enthusiasts converge in Sturgis, South Dakota, USA every year to be part of one of the country's largest and longest-running gatherings of bikers. Many of them ride for days, enduring miles of blistering sun, bouts of rain and the occasional mouthful of bugs before arriving in a cloud of dust at the Sturgis Motorcycle Rally. Needless to say, the major star of the rally is a brand that has a cult following as massive as that of Apple, Starbucks and even Superman - "Harley-Davidson". The wide open road and the thunderous roar of a V-Twin engine make Harley Davidson stand out as the ultimate motorcycle cult brand.