When the XC90 was introduced four years ago, it changed the perception of what a luxury SUV could be. So what does Volvo do for an encore? It raises the bar for 2007 by giving the XC90 more style, refinement and performance. “We have listened closely to our customers and enhanced the XC90 to boost our competitiveness,” says Frederik Arp, president and chief executive officer of Volvo Cars. “We alr...