The HHR, like the SSR released by Chevrolet one year before it, is a retro car meant to evoke comparisons with vehicles of another generation. Taking styling cues from the 1949 Chevrolet/GMC Suburban the HHR, or Heritage High Roof, is based on the all new Chevrolet Cobalt frame. The PT Cruiser is also a retro vehicle and it take its styling cues from panel trucks of the same era, thus the PT in the name makes the vehicle a panel truck cruiser. For further comparison notes the Chrysler is based on the aging [and soon to be discontinued] Neon platform.
