Standard safety equipment for the 2011 Chevy HHR includes anti-lock front disc/rear drum brakes on LS and LT models. Stability control and side curtain airbags are also standard, though front seat side-impact airbags aren't offered. GM's OnStar telematics system is standard across the HHR model lineup as well.
Depending on your height, you might find outward visibility just fine, or downright challenging. With the relatively short windshield and wide pillars, it all depends, so make sure you pay attention on the test drive. And beware, panel-wagon version, which are intended as work vehicles, do have bad rear visibility due to the omission of certain windows.