Infiniti’s giant QX80 SUV was launched 20 years ago as the QX56, and while the name has changed, one thing hasn’t: the biggest QX has always been among the ugliest SUVs you can buy. But the third-generation model Nissan’s upscale brand is getting ready to reveal has clearly had enough of looking like a rolling Victorian freak show and is bringing some real style to the table.Style? Okay, let’s just check ourselves there, because there’s only so much a designer can do when told to package a vehicle that the engineering department has already decreed must be shaped like a 1970s school bus.