The Chevrolet Cobalt SS Turbo and HHR Panel SS Concept benefit from the same 2.0-liter Ecotec four stuffed in the Pontiac Solstice GXP and the Saturn Sky Redline. Making 260-horsepower and 260 ...
At the 2007 SEMA Show, Chevrolet revealed the HHR Panel SS – a customized vision that previews a forthcoming production model differing only slightly from the stylized SEMA concept. The Panel SS fuses ...