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Heritage High Roof is what HHR actually stands for. It's pretty self-explanatory, but we get paid to fill this white space. By heritage, GM means the 1949 Chevy Suburban echoed in the HHR's bulldog face and baggy fenders. The roof actually looks low from the outside, thanks to pillbox windows seemingly cut by a hot rodder's torch, but it's not.
The HHR's cavernous interior includes fold-flat rear and right-front seats, three underfloor storage bins, and a movable parcel shelf in back that, when raised, doubles the cargo floor space. Underneath the HHR you'll find the Cobalt's front-strut, rear-twist-beam suspension and the same disc-and-drum brake combination.