Consider the SS a stealth weapon: a serious performance car cloaked in a restrained exterior with a spacious, comfortable cabin. But its ferocious speed, responsive handling, and fantastic brakes keep pace with many high-end sports sedans. The rear-drive SS comes fully loaded and is powered by a burbling, 415-hp, 6.2-liter V8. Controls are simple, and standard safety gear includes forward-collision alert, lane-departure warning, blind-spot monitors, and a back-up camera with cross-traffic alert. A firm but tolerable ride and a paltry 17 mpg overall are modest drawbacks that go with the territory.