Even sedans, the popular choice among American buyers, are starting to lose ground to crossovers and SUVs. The option of a high performance sedan with a big V8 engine is dwindling, but luckily Genesis still sells one. We recently tested the G80 Sport, which is powered by a 3.3-liter twin-turbo V6. Although the Sport is the most aggressive looking model, it isn't the most powerful. The G80 is also available with a 420-hp 5.0-liter V8, without the aggressive look of the G80 Sport.