There are a handful of expensive executive cars that offer performance variants that push the envelope of size and handling. But Porsche just rolls its eyes and laughs. Though it lacks the sheer size of its big sedan counterparts, the Panamera takes the driving aspect to an entirely different level.By the time it was introduced in 2009, unprogressive Porsche loyalists had already survived the brand’s foray into SUVs, so a 4-door sports car was greeted with a mere shrug of the shoulders. It was a brilliant move by the German automaker, fleshing out a lineup that now includes a Porsche for nearly every need.