Willie G. Davidson likes to say that he was born with gasoline in his veins and a crayon in each hand. A designer at heart, Davidson combined his passions for art and motorcycles to extend a multi-generational unbroken thread from Harley-Davidson Motorcycle Company's birth in a wooden shed in the early twentieth century to today. The grandson of one of the company's founders and the son of one of its longtime presidents, Davidson created a series...