High Quality Content by WIKIPEDIA articles! The Chevrolet HHR (for Heritage High Roof) was a retro-styled station wagon launched by the Chevrolet division of American automaker General Motors at the 2005 Los Angeles Auto Show as a 2006 model — and designed by Bryan Nesbitt. Smaller than the Equinox, the HHR shared the GM Delta platform with the Chevrolet Cobalt, Pontiac G5, Saturn Ion, and Saturn Astra. In Mexico, it was sold alongside its predecessor, the Opel-sourced Chevrolet Zafira compact MPV. The car also resembles the shape of the Chrysler PT Cruiser.