An automotive exhibition featuring a number of Harley Davidson motorcycles that have been modified was held at the Museum of Harley Davidson in Milwaukee, Wisconsin, USA. The exhibition entitled 'Collection X: Weird, Wild Wonders of the Harley-Davidson Museum' will be open to the public until August 21, 2011. (Photo: AP Photo)
Harley Davidson leather on display at the Harley Davidson Museum in Milwaukee, Wisconsin, United States, Tuesday (22 / 7). Photo: AP Photo / Harley-Davidson Motor Company, Kelly Lasky
Harley Davidson leather on display at the Harley Davidson Museum in Milwaukee, Wisconsin, United States, Tuesday (22 / 7). Photo: AP Photo / Harley-Davidson Motor Company, Kelly Lasky
Harley Davidson used for motor cross on display at the Harley Davidson Museum in Milwaukee, Wisconsin, United States, Tuesday (7 / 7). Photo: AP Photo / Carrie Antlfinger
Bill Davidson, great-grandson of the founder of Harley Davidson Motor Company was standing near a motorcycle Rukio at Harley Davidson Museum in Milwaukee, Wisconsin, on Tuesday (7 / 7). Photo: AP Photo / Carrie Antlfinger
Harley-Davidson three-wheeled vehicles on display at the Harley Davidson Museum in Milwaukee, Wisconsin, United States, Tuesday (7 / 7). Photo: AP Photo / Carrie Antlfinger
Harley Davidson is modified into a mine car on display at the Harley Davidson Museum in Milwaukee, Wisconsin, United States, Tuesday (7 / 7). Photo: AP Photo / Carrie Antlfinger
Harley Davidson Museum curator, Kristen Jones, standing near the mask of a biker in the Milwaukee, Wisconsin, United States, Tuesday (7 / 7). Photo: AP Photo / Carrie Antlfinger
