Lightning Round: Heckmann, Potash & More By: CNBC.com News May 17, 2013 at 18:46 PM EDT Are you ready skeedaddy???!!! It's time for the Lightning Round. Cramer makes the call on viewer favorites. Read More >> Related Stocks: Asbury Automotive Group Inc CarMax Mgic Investment Corp Penn Entertainment Inc Potash Corporation of Saskatchewan Radian Group Inc Suncor Energy Inc Ubiquiti Networks