Harley-Davidson Posts Higher Profit  CHICAGO (Reuters) - Motorcycle maker Harley-Davidson Inc.  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=HDI.N target=/stocks/quickinfo/fullquote"&gt;HDI.N&lt;/A&gt; roared to record quarterly earnings on Wednesday,  boosted by more efficient operations and demand for its new  models.