This easily recognizable sport coupe was redesigned last year. It boasts a more aerodynamic body, a completely redesigned dashboard and three new engines ranging from the 275-horsepower, 2.0L four cylinder to the 6.2L V8 in the SS producing 455 horsepower. GM is going a step further this year: in addition to the 50th anniversary versions, there's the ZL1 with its 6.2L supercharged V8 that generates 650 horsepower.