Chevrolet upgraded the HHR lineup in 2006 with the introduction of a new, more powerful version that recalled the Super Sport badge from the company's heritage.

The three letters from the HHR stood for Heritage High Roof, and the car was one of the most significant representatives of the retro-design theme that Chevrolet tried to use during the mid-2000s.

At the beginning of the 2000s, the retro-design fever caught-on, and Chevrolet's design department turned its eyes on the cars from the '40s. The result was the Chevrolet High Heritage Roof or HHR for short.