It's over between Volvo and diesel engines. Last September, at Climate Week NYC, the Swedish carmaker said it was breaking up with Rudolph Diesel's popular, globetrotting invention. Earlier this month, the Volvo plant in Torslanda, Sweden, sent the penultimate diesel-powered XC90 into the world. Then came the ender, the last of its kind: A blue XC90 produced at Volvo's Ghent, Belgium, plant utilizing a twin-turbocharged 2.0-liter four-cylinder mild hybrid making 235 horsepower and 354 pound-feet of torque. Just as with the last-of-its-kind Audi R8 that recently emerged from Audi's Bollinger Hofe facility, the XC90 is headed to a special assignment, the World of Volvo museum, event and conference space slated to open April 14 in Gothenburg, Sweden.