YRC’s top spot isn’t easy to fill

As bumpy as the road remains, Overland Park-based trucker YRC Worldwide Inc. has made it to the start of 2011, though some industry observers continue to doubt its future. But whether YRC’s trucks are on America’s highways at the end of the year could hinge on who becomes its lead driver.In late September, YRC head Bill Zollars announced he would be retiring from the company, where he took over